[USN-8384-1] Apache HTTP Server vulnerability
[USN-8386-1] Nano vulnerabilities
[USN-8393-1] Linux kernel (Azure FIPS) vulnerabilities
[USN-8361-2] Linux kernel (FIPS) vulnerability
[USN-8388-1] Linux kernel vulnerabilities
[USN-8392-1] Linux kernel vulnerabilities
[USN-8391-1] Linux kernel (Raspberry Pi) vulnerabilities
[USN-8390-1] Linux kernel vulnerability
[USN-8389-1] Linux kernel vulnerabilities
[USN-8384-1] Apache HTTP Server vulnerability
==========================================================================
Ubuntu Security Notice USN-8384-1
June 04, 2026
apache2 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
Apache HTTP Server could be made to consume excessive resources if it
received specially crafted network traffic.
Software Description:
- apache2: Apache HTTP server
Details:
It was discovered that Apache HTTP Server incorrectly handled certain
cookie headers in the HTTP/2 implementation. A remote attacker could
possibly use this issue to cause Apache HTTP Server to consume excessive
resources, resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
apache2 2.4.66-2ubuntu2.2
Ubuntu 25.10
apache2 2.4.64-1ubuntu3.5
Ubuntu 24.04 LTS
apache2 2.4.58-1ubuntu8.13
Ubuntu 22.04 LTS
apache2 2.4.52-1ubuntu4.21
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8384-1
CVE-2026-49975
Package Information:
https://launchpad.net/ubuntu/+source/apache2/2.4.66-2ubuntu2.2
https://launchpad.net/ubuntu/+source/apache2/2.4.64-1ubuntu3.5
https://launchpad.net/ubuntu/+source/apache2/2.4.58-1ubuntu8.13
https://launchpad.net/ubuntu/+source/apache2/2.4.52-1ubuntu4.21
[USN-8386-1] Nano vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8386-1
June 04, 2026
nano vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in Nano.
Software Description:
- nano: GNU nano editor
Details:
Michał Majchrowicz and Marcin Wyczechowski discovered that Nano created
the ~/.local directory with incorrect permissions. In environments with
permissive umask settings, a local attacker could possibly use this
issue to inject a malicious launcher file, resulting in information
disclosure or other unintended actions. (CVE-2026-6842)
Michał Majchrowicz and Marcin Wyczechowski discovered that Nano
incorrectly handled directory names when updating the status line. A
local attacker could possibly use this issue to cause Nano to crash,
resulting in a denial of service. This issue only affected Ubuntu 22.04
LTS, Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS.
(CVE-2026-6843)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
nano 8.7.1-1ubuntu0.1
nano-tiny 8.7.1-1ubuntu0.1
Ubuntu 25.10
nano 8.4-1ubuntu0.1
nano-tiny 8.4-1ubuntu0.1
Ubuntu 24.04 LTS
nano 7.2-2ubuntu0.2
nano-tiny 7.2-2ubuntu0.2
Ubuntu 22.04 LTS
nano 6.2-1ubuntu0.2
nano-tiny 6.2-1ubuntu0.2
Ubuntu 20.04 LTS
nano 4.8-1ubuntu1.1+esm1
Available with Ubuntu Pro
nano-tiny 4.8-1ubuntu1.1+esm1
Available with Ubuntu Pro
Ubuntu 18.04 LTS
nano 2.9.3-2ubuntu0.1~esm2
Available with Ubuntu Pro
nano-tiny 2.9.3-2ubuntu0.1~esm2
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8386-1
CVE-2026-6842, CVE-2026-6843
Package Information:
https://launchpad.net/ubuntu/+source/nano/8.7.1-1ubuntu0.1
https://launchpad.net/ubuntu/+source/nano/8.4-1ubuntu0.1
https://launchpad.net/ubuntu/+source/nano/7.2-2ubuntu0.2
https://launchpad.net/ubuntu/+source/nano/6.2-1ubuntu0.2
[USN-8393-1] Linux kernel (Azure FIPS) vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8393-1
June 04, 2026
linux-azure-fips vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 24.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS
Details:
It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)
It was discovered that a logic flaw existed in the XFRM ESP-in-TCP
subsystem in the Linux kernel when handling socket buffer fragments. This
flaw is known as Fragnesia. A local attacker could use this to escalate
privileges, or possibly escape a container. (CVE-2026-43503,
CVE-2026-46300)
Qualys discovered that a race condition existed in the ptrace subsystem of
the Linux kernel when privileged processes are exiting. An unprivileged
local attacker could use this issue to expose sensitive information.
(CVE-2026-46333)
Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contain a memory leak when handling AppArmor notifications. A local
attacker could use this to cause resource exhaustion. (CVE-2026-47326)
Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contain a NULL pointer dereference when handling AppArmor notifications. A
local attacker could use this to cause a kernel oops. (CVE-2026-47327)
Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained an invalid free when handling AppArmor notifications. A local
attacker could use this to corrupt kernel memory. (CVE-2026-47328)
Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained insufficient validation of AppArmor notification responses. A
local attacker could use this to allow crafted responses to be processed.
(CVE-2026-47329)
Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 used
an uninitialized variable when handling AppArmor notifications. A local
attacker could use this to cause incorrect caching of data.
(CVE-2026-47330)
Tristan Madani discovered that Ubuntu Linux kernel 6.8 contained a use-
after-free (UAF) bug. A local attacker could use this to cause memory
corruption and, theoretically, arbitrary code execution. (CVE-2026-47331)
Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained an out-of-bounds (OOB) read when handling AppArmor notifications.
A local attacker could use this to cause information disclosure of kernel
memory. (CVE-2026-47332)
Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained a out-of-bounds (OOB) read when handling AppArmor notifications.
A local attacker could use this to cause kernel memory corruption and,
theoretically, influence processing of AppArmor policies. (CVE-2026-47333)
Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained incorrect holding of locks when handling AppArmor notifications.
A local attacker could use this to cause a kernel panic or deadlock.
(CVE-2026-47334)
Tristan Madani discovered that Ubuntu Linux kernel 6.8 contained a NULL
pointer dereference when handling AppArmor notifications. A local attacker
could use this to cause a kernel panic. (CVE-2026-47335)
Tristan Madani discovered that Ubuntu Linux kernel 6.8 used an
uninitialized variable when handling AppArmor AF_INET/AF_INET6 socket
mediation. A local attacker could use this to influence processing of fine-
grained network socket mediation. (CVE-2026-47336)
Tristan Madani and Trevor Lawrence have each independently discovered that
Ubuntu Linux kernel 6.8, 6.17 and 7.0 contained a NULL pointer dereference
when handling AppArmor network socket mediation. A local attacker could use
this to cause a kernel oops. (CVE-2026-47337)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- x86 architecture;
- Cryptographic API;
- Compute Acceleration Framework;
- Drivers core;
- Null block device driver;
- Ublk userspace block driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
- DPLL subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IIO subsystem;
- On-Chip Interconnect management framework;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- Multiple devices driver;
- UACCE accelerator framework;
- MMC subsystem;
- Ethernet bonding driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- PHY drivers;
- x86 platform drivers;
- i.MX PM domains;
- SCSI subsystem;
- SLIMbus drivers;
- SPI subsystem;
- TCM subsystem;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor drivers;
- BTRFS file system;
- EFI Variable file system;
- exFAT file system;
- Ext4 file system;
- HFS+ file system;
- Network file system (NFS) client;
- Network file system (NFS) server daemon;
- NTFS3 file system;
- SMB network file system;
- Scheduler infrastructure;
- Netfilter;
- NFC subsystem;
- Tracing infrastructure;
- io_uring subsystem;
- BPF subsystem;
- Perf events;
- Floating proportions library;
- Memory management;
- Bluetooth subsystem;
- CAN network layer;
- Ceph Core library;
- Networking core;
- IPv4 networking;
- IPv6 networking;
- L2TP protocol;
- MAC80211 subsystem;
- NET/ROM layer;
- Packet sockets;
- RDS protocol;
- RxRPC session sockets;
- Network traffic control;
- SCTP protocol;
- TLS protocol;
- Unix domain sockets;
- VMware vSockets driver;
- Wireless networking;
- ALSA AC97 driver;
- Generic PCM loopback sound driver;
- Creative Sound Blaster X-Fi driver;
- AMD SoC Alsa drivers;
- Texas InstrumentS Audio (ASoC/HDA) drivers;
- USB sound devices;
- KVM subsystem;
(CVE-2024-50004, CVE-2024-58096, CVE-2024-58097, CVE-2025-37926,
CVE-2025-38201, CVE-2025-38591, CVE-2025-40039, CVE-2025-40082,
CVE-2025-40149, CVE-2025-68351, CVE-2025-68358, CVE-2025-68365,
CVE-2025-68725, CVE-2025-68749, CVE-2025-68803, CVE-2025-68823,
CVE-2025-71160, CVE-2025-71162, CVE-2025-71163, CVE-2025-71180,
CVE-2025-71182, CVE-2025-71183, CVE-2025-71184, CVE-2025-71185,
CVE-2025-71186, CVE-2025-71188, CVE-2025-71189, CVE-2025-71190,
CVE-2025-71191, CVE-2025-71192, CVE-2025-71193, CVE-2025-71194,
CVE-2025-71195, CVE-2025-71196, CVE-2025-71197, CVE-2025-71198,
CVE-2025-71199, CVE-2025-71200, CVE-2025-71220, CVE-2025-71222,
CVE-2025-71224, CVE-2025-71225, CVE-2025-71268, CVE-2026-22976,
CVE-2026-22977, CVE-2026-22978, CVE-2026-22979, CVE-2026-22980,
CVE-2026-22982, CVE-2026-22984, CVE-2026-22990, CVE-2026-22991,
CVE-2026-22992, CVE-2026-22994, CVE-2026-22996, CVE-2026-22997,
CVE-2026-22998, CVE-2026-22999, CVE-2026-23000, CVE-2026-23001,
CVE-2026-23003, CVE-2026-23005, CVE-2026-23006, CVE-2026-23010,
CVE-2026-23011, CVE-2026-23019, CVE-2026-23020, CVE-2026-23021,
CVE-2026-23025, CVE-2026-23026, CVE-2026-23030, CVE-2026-23031,
CVE-2026-23032, CVE-2026-23033, CVE-2026-23035, CVE-2026-23037,
CVE-2026-23038, CVE-2026-23047, CVE-2026-23049, CVE-2026-23050,
CVE-2026-23053, CVE-2026-23054, CVE-2026-23056, CVE-2026-23057,
CVE-2026-23058, CVE-2026-23059, CVE-2026-23061, CVE-2026-23062,
CVE-2026-23063, CVE-2026-23064, CVE-2026-23065, CVE-2026-23068,
CVE-2026-23069, CVE-2026-23071, CVE-2026-23073, CVE-2026-23075,
CVE-2026-23076, CVE-2026-23078, CVE-2026-23080, CVE-2026-23083,
CVE-2026-23084, CVE-2026-23085, CVE-2026-23086, CVE-2026-23087,
CVE-2026-23088, CVE-2026-23089, CVE-2026-23090, CVE-2026-23091,
CVE-2026-23093, CVE-2026-23094, CVE-2026-23095, CVE-2026-23096,
CVE-2026-23097, CVE-2026-23098, CVE-2026-23099, CVE-2026-23101,
CVE-2026-23102, CVE-2026-23103, CVE-2026-23105, CVE-2026-23107,
CVE-2026-23108, CVE-2026-23110, CVE-2026-23113, CVE-2026-23116,
CVE-2026-23119, CVE-2026-23120, CVE-2026-23121, CVE-2026-23123,
CVE-2026-23124, CVE-2026-23125, CVE-2026-23126, CVE-2026-23128,
CVE-2026-23129, CVE-2026-23131, CVE-2026-23133, CVE-2026-23135,
CVE-2026-23136, CVE-2026-23139, CVE-2026-23140, CVE-2026-23141,
CVE-2026-23142, CVE-2026-23144, CVE-2026-23145, CVE-2026-23146,
CVE-2026-23148, CVE-2026-23150, CVE-2026-23151, CVE-2026-23156,
CVE-2026-23159, CVE-2026-23160, CVE-2026-23163, CVE-2026-23164,
CVE-2026-23166, CVE-2026-23167, CVE-2026-23168, CVE-2026-23170,
CVE-2026-23172, CVE-2026-23173, CVE-2026-23176, CVE-2026-23178,
CVE-2026-23179, CVE-2026-23180, CVE-2026-23182, CVE-2026-23187,
CVE-2026-23190, CVE-2026-23191, CVE-2026-23193, CVE-2026-23198,
CVE-2026-23200, CVE-2026-23202, CVE-2026-23204, CVE-2026-23205,
CVE-2026-23206, CVE-2026-23212, CVE-2026-23213, CVE-2026-23214,
CVE-2026-23215, CVE-2026-23216, CVE-2026-23254, CVE-2026-23256,
CVE-2026-23257, CVE-2026-23258, CVE-2026-23260, CVE-2026-23261,
CVE-2026-23262, CVE-2026-23264, CVE-2026-23274, CVE-2026-23351,
CVE-2026-23394, CVE-2026-31419, CVE-2026-31504, CVE-2026-31533,
CVE-2026-31676, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078,
CVE-2026-43494, CVE-2026-46028)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 24.04 LTS
linux-image-6.8.0-1059-azure-fips 6.8.0-1059.65+fips1
Available with Ubuntu Pro
linux-image-azure-fips 6.8.0-1059.65+fips1
Available with Ubuntu Pro
linux-image-azure-fips-6.8 6.8.0-1059.65+fips1
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://ubuntu.com/security/notices/USN-8393-1
CVE-2024-50004, CVE-2024-58096, CVE-2024-58097, CVE-2025-37926,
CVE-2025-38201, CVE-2025-38591, CVE-2025-40039, CVE-2025-40082,
CVE-2025-40149, CVE-2025-68351, CVE-2025-68358, CVE-2025-68365,
CVE-2025-68725, CVE-2025-68749, CVE-2025-68803, CVE-2025-68823,
CVE-2025-71160, CVE-2025-71162, CVE-2025-71163, CVE-2025-71180,
CVE-2025-71182, CVE-2025-71183, CVE-2025-71184, CVE-2025-71185,
CVE-2025-71186, CVE-2025-71188, CVE-2025-71189, CVE-2025-71190,
CVE-2025-71191, CVE-2025-71192, CVE-2025-71193, CVE-2025-71194,
CVE-2025-71195, CVE-2025-71196, CVE-2025-71197, CVE-2025-71198,
CVE-2025-71199, CVE-2025-71200, CVE-2025-71220, CVE-2025-71222,
CVE-2025-71224, CVE-2025-71225, CVE-2025-71268, CVE-2026-22976,
CVE-2026-22977, CVE-2026-22978, CVE-2026-22979, CVE-2026-22980,
CVE-2026-22982, CVE-2026-22984, CVE-2026-22990, CVE-2026-22991,
CVE-2026-22992, CVE-2026-22994, CVE-2026-22996, CVE-2026-22997,
CVE-2026-22998, CVE-2026-22999, CVE-2026-23000, CVE-2026-23001,
CVE-2026-23003, CVE-2026-23005, CVE-2026-23006, CVE-2026-23010,
CVE-2026-23011, CVE-2026-23019, CVE-2026-23020, CVE-2026-23021,
CVE-2026-23025, CVE-2026-23026, CVE-2026-23030, CVE-2026-23031,
CVE-2026-23032, CVE-2026-23033, CVE-2026-23035, CVE-2026-23037,
CVE-2026-23038, CVE-2026-23047, CVE-2026-23049, CVE-2026-23050,
CVE-2026-23053, CVE-2026-23054, CVE-2026-23056, CVE-2026-23057,
CVE-2026-23058, CVE-2026-23059, CVE-2026-23061, CVE-2026-23062,
CVE-2026-23063, CVE-2026-23064, CVE-2026-23065, CVE-2026-23068,
CVE-2026-23069, CVE-2026-23071, CVE-2026-23073, CVE-2026-23075,
CVE-2026-23076, CVE-2026-23078, CVE-2026-23080, CVE-2026-23083,
CVE-2026-23084, CVE-2026-23085, CVE-2026-23086, CVE-2026-23087,
CVE-2026-23088, CVE-2026-23089, CVE-2026-23090, CVE-2026-23091,
CVE-2026-23093, CVE-2026-23094, CVE-2026-23095, CVE-2026-23096,
CVE-2026-23097, CVE-2026-23098, CVE-2026-23099, CVE-2026-23101,
CVE-2026-23102, CVE-2026-23103, CVE-2026-23105, CVE-2026-23107,
CVE-2026-23108, CVE-2026-23110, CVE-2026-23113, CVE-2026-23116,
CVE-2026-23119, CVE-2026-23120, CVE-2026-23121, CVE-2026-23123,
CVE-2026-23124, CVE-2026-23125, CVE-2026-23126, CVE-2026-23128,
CVE-2026-23129, CVE-2026-23131, CVE-2026-23133, CVE-2026-23135,
CVE-2026-23136, CVE-2026-23139, CVE-2026-23140, CVE-2026-23141,
CVE-2026-23142, CVE-2026-23144, CVE-2026-23145, CVE-2026-23146,
CVE-2026-23148, CVE-2026-23150, CVE-2026-23151, CVE-2026-23156,
CVE-2026-23159, CVE-2026-23160, CVE-2026-23163, CVE-2026-23164,
CVE-2026-23166, CVE-2026-23167, CVE-2026-23168, CVE-2026-23170,
CVE-2026-23172, CVE-2026-23173, CVE-2026-23176, CVE-2026-23178,
CVE-2026-23179, CVE-2026-23180, CVE-2026-23182, CVE-2026-23187,
CVE-2026-23190, CVE-2026-23191, CVE-2026-23193, CVE-2026-23198,
CVE-2026-23200, CVE-2026-23202, CVE-2026-23204, CVE-2026-23205,
CVE-2026-23206, CVE-2026-23212, CVE-2026-23213, CVE-2026-23214,
CVE-2026-23215, CVE-2026-23216, CVE-2026-23254, CVE-2026-23256,
CVE-2026-23257, CVE-2026-23258, CVE-2026-23260, CVE-2026-23261,
CVE-2026-23262, CVE-2026-23264, CVE-2026-23274, CVE-2026-23351,
CVE-2026-23394, CVE-2026-31419, CVE-2026-31431, CVE-2026-31504,
CVE-2026-31533, CVE-2026-31676, CVE-2026-43033, CVE-2026-43077,
CVE-2026-43078, CVE-2026-43284, CVE-2026-43494, CVE-2026-43500,
CVE-2026-43503, CVE-2026-45998, CVE-2026-46000, CVE-2026-46028,
CVE-2026-46300, CVE-2026-46333, CVE-2026-47326, CVE-2026-47327,
CVE-2026-47328, CVE-2026-47329, CVE-2026-47330, CVE-2026-47331,
CVE-2026-47332, CVE-2026-47333, CVE-2026-47334, CVE-2026-47335,
CVE-2026-47336, CVE-2026-47337
Package Information:
https://launchpad.net/ubuntu/+source/linux-azure-fips/6.8.0-1059.65+fips1
[USN-8361-2] Linux kernel (FIPS) vulnerability
==========================================================================
Ubuntu Security Notice USN-8361-2
June 04, 2026
linux-fips vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
Summary:
The system could be compromised under certain conditions.
Software Description:
- linux-fips: Linux kernel with FIPS
Details:
A security issue was discovered in the Linux kernel.
An attacker could possibly use this to compromise the system.
This update corrects flaws in the following subsystem:
- Packet sockets;
(CVE-2026-31504)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS
linux-image-4.4.0-1125-fips 4.4.0-1125.132
Available with Ubuntu Pro
linux-image-fips 4.4.0.1125.127
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://ubuntu.com/security/notices/USN-8361-2
https://ubuntu.com/security/notices/USN-8361-1
CVE-2026-31504
Package Information:
https://launchpad.net/ubuntu/+source/linux-fips/4.4.0-1125.132
[USN-8388-1] Linux kernel vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8388-1
June 04, 2026
linux, linux-aws, linux-aws-5.15, linux-aws-fips, linux-fips, linux-gcp,
linux-gcp-5.15, linux-gcp-fips, linux-gke, linux-gkeop, linux-hwe-5.15,
linux-ibm, linux-ibm-5.15, linux-intel-iot-realtime, linux-intel-iotg,
linux-kvm, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-5.15,
linux-nvidia-tegra-igx, linux-oracle, linux-raspi, linux-realtime
vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS
- linux-fips: Linux kernel with FIPS
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with
FIPS
- linux-gke: Linux kernel for Google Container Engine (GKE) systems
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-intel-iot-realtime: Linux kernel for Intel IoT Real-time platforms
- linux-intel-iotg: Linux kernel for Intel IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-nvidia: Linux kernel for NVIDIA systems
- linux-nvidia-tegra: Linux kernel for NVIDIA Tegra systems
- linux-nvidia-tegra-igx: Linux kernel for NVIDIA Tegra IGX systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-realtime: Linux kernel for Real-time systems
- linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-5.15: Linux hardware enablement (HWE) kernel
- linux-ibm-5.15: Linux kernel for IBM cloud systems
- linux-nvidia-tegra-5.15: Linux kernel for NVIDIA Tegra systems
Details:
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500)
It was discovered that a logic flaw existed in the XFRM ESP-in-TCP
subsystem in the Linux kernel when handling socket buffer fragments. This
flaw is known as Fragnesia. A local attacker could use this to escalate
privileges, or possibly escape a container. (CVE-2026-43503,
CVE-2026-46300)
Qualys discovered that a race condition existed in the ptrace subsystem of
the Linux kernel when privileged processes are exiting. An unprivileged
local attacker could use this issue to expose sensitive information.
(CVE-2026-46333)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- RDS protocol;
(CVE-2026-43494)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS
linux-image-5.15.0-1050-nvidia-tegra-igx 5.15.0-1050.50
linux-image-5.15.0-1050-nvidia-tegra-igx-rt 5.15.0-1050.50
linux-image-5.15.0-1061-nvidia-tegra 5.15.0-1061.61
linux-image-5.15.0-1061-nvidia-tegra-rt 5.15.0-1061.61
linux-image-5.15.0-1092-gkeop 5.15.0-1092.100
linux-image-5.15.0-1101-intel-iot-realtime 5.15.0-1101.103
Available with Ubuntu Pro
linux-image-5.15.0-1101-kvm 5.15.0-1101.106
linux-image-5.15.0-1103-ibm 5.15.0-1103.106
linux-image-5.15.0-1103-raspi 5.15.0-1103.106
linux-image-5.15.0-1104-intel-iotg 5.15.0-1104.110
linux-image-5.15.0-1104-nvidia 5.15.0-1104.105
linux-image-5.15.0-1104-nvidia-lowlatency 5.15.0-1104.105
linux-image-5.15.0-1105-gke 5.15.0-1105.111
linux-image-5.15.0-1106-oracle 5.15.0-1106.112
linux-image-5.15.0-1108-realtime 5.15.0-1108.117
Available with Ubuntu Pro
linux-image-5.15.0-1109-aws 5.15.0-1109.116
linux-image-5.15.0-1109-aws-64k 5.15.0-1109.116
linux-image-5.15.0-1109-aws-fips 5.15.0-1109.116+fips1
Available with Ubuntu Pro
linux-image-5.15.0-1109-gcp 5.15.0-1109.118
linux-image-5.15.0-1109-gcp-fips 5.15.0-1109.118+fips1
Available with Ubuntu Pro
linux-image-5.15.0-181-fips 5.15.0-181.191+fips1
Available with Ubuntu Pro
linux-image-5.15.0-181-generic 5.15.0-181.191
linux-image-5.15.0-181-generic-64k 5.15.0-181.191
linux-image-5.15.0-181-generic-lpae 5.15.0-181.191
linux-image-aws-5.15 5.15.0.1109.112
linux-image-aws-64k-5.15 5.15.0.1109.112
linux-image-aws-64k-lts-22.04 5.15.0.1109.112
linux-image-aws-fips 5.15.0.1109.105
Available with Ubuntu Pro
linux-image-aws-fips-5.15 5.15.0.1109.105
Available with Ubuntu Pro
linux-image-aws-lts-22.04 5.15.0.1109.112
linux-image-fips 5.15.0.181.106
Available with Ubuntu Pro
linux-image-fips-5.15 5.15.0.181.106
Available with Ubuntu Pro
linux-image-gcp-5.15 5.15.0.1109.105
linux-image-gcp-fips 5.15.0.1109.99
Available with Ubuntu Pro
linux-image-gcp-fips-5.15 5.15.0.1109.99
Available with Ubuntu Pro
linux-image-gcp-lts-22.04 5.15.0.1109.105
linux-image-generic 5.15.0.181.164
linux-image-generic-5.15 5.15.0.181.164
linux-image-generic-64k 5.15.0.181.164
linux-image-generic-64k-5.15 5.15.0.181.164
linux-image-generic-lpae 5.15.0.181.164
linux-image-generic-lpae-5.15 5.15.0.181.164
linux-image-gke 5.15.0.1105.104
linux-image-gke-5.15 5.15.0.1105.104
linux-image-gkeop 5.15.0.1092.91
linux-image-gkeop-5.15 5.15.0.1092.91
linux-image-ibm 5.15.0.1103.99
linux-image-ibm-5.15 5.15.0.1103.99
linux-image-intel-iot-realtime 5.15.0.1101.105
Available with Ubuntu Pro
linux-image-intel-iot-realtime-5.15 5.15.0.1101.105
Available with Ubuntu Pro
linux-image-intel-iotg 5.15.0.1104.103
linux-image-intel-iotg-5.15 5.15.0.1104.103
linux-image-kvm 5.15.0.1101.97
linux-image-kvm-5.15 5.15.0.1101.97
linux-image-nvidia 5.15.0.1104.104
linux-image-nvidia-5.15 5.15.0.1104.104
linux-image-nvidia-lowlatency 5.15.0.1104.104
linux-image-nvidia-lowlatency-5.15 5.15.0.1104.104
linux-image-nvidia-tegra 5.15.0.1061.61
linux-image-nvidia-tegra-5.15 5.15.0.1061.61
linux-image-nvidia-tegra-igx 5.15.0.1050.52
linux-image-nvidia-tegra-igx-5.15 5.15.0.1050.52
linux-image-nvidia-tegra-igx-rt 5.15.0.1050.52
linux-image-nvidia-tegra-igx-rt-5.15 5.15.0.1050.52
linux-image-nvidia-tegra-rt 5.15.0.1061.61
linux-image-nvidia-tegra-rt-5.15 5.15.0.1061.61
linux-image-oem-20.04 5.15.0.181.164
linux-image-oracle-5.15 5.15.0.1106.102
linux-image-oracle-lts-22.04 5.15.0.1106.102
linux-image-raspi 5.15.0.1103.101
linux-image-raspi-5.15 5.15.0.1103.101
linux-image-raspi-nolpae 5.15.0.1103.101
linux-image-realtime 5.15.0.1108.112
Available with Ubuntu Pro
linux-image-realtime-5.15 5.15.0.1108.112
Available with Ubuntu Pro
linux-image-virtual 5.15.0.181.164
linux-image-virtual-5.15 5.15.0.181.164
Ubuntu 20.04 LTS
linux-image-5.15.0-1061-nvidia-tegra 5.15.0-1061.61~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1061-nvidia-tegra-rt 5.15.0-1061.61~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1103-ibm 5.15.0-1103.106~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1109-aws 5.15.0-1109.116~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1109-gcp 5.15.0-1109.118~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-181-generic 5.15.0-181.191~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-181-generic-64k 5.15.0-181.191~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-181-generic-lpae 5.15.0-181.191~20.04.1
Available with Ubuntu Pro
linux-image-aws 5.15.0.1109.116~20.04.1
Available with Ubuntu Pro
linux-image-aws-5.15 5.15.0.1109.116~20.04.1
Available with Ubuntu Pro
linux-image-gcp 5.15.0.1109.118~20.04.1
Available with Ubuntu Pro
linux-image-gcp-5.15 5.15.0.1109.118~20.04.1
Available with Ubuntu Pro
linux-image-generic-5.15 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-generic-64k-5.15 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-generic-64k-hwe-20.04 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-generic-hwe-20.04 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-generic-lpae-5.15 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-generic-lpae-hwe-20.04 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-ibm 5.15.0.1103.106~20.04.1
Available with Ubuntu Pro
linux-image-ibm-5.15 5.15.0.1103.106~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra 5.15.0.1061.61~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-5.15 5.15.0.1061.61~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-rt 5.15.0.1061.61~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-rt-5.15 5.15.0.1061.61~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04b 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04c 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04d 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-virtual-5.15 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
linux-image-virtual-hwe-20.04 5.15.0.181.191~20.04.1
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://ubuntu.com/security/notices/USN-8388-1
CVE-2026-43284, CVE-2026-43494, CVE-2026-43500, CVE-2026-43503,
CVE-2026-46300, CVE-2026-46333
Package Information:
https://launchpad.net/ubuntu/+source/linux/5.15.0-181.191
https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1109.116
https://launchpad.net/ubuntu/+source/linux-aws-fips/5.15.0-1109.116+fips1
https://launchpad.net/ubuntu/+source/linux-fips/5.15.0-181.191+fips1
https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1109.118
https://launchpad.net/ubuntu/+source/linux-gcp-fips/5.15.0-1109.118+fips1
https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1105.111
https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1092.100
https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1103.106
https://launchpad.net/ubuntu/+source/linux-intel-iot-realtime/5.15.0-1101.103
https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1104.110
https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1101.106
https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1104.105
https://launchpad.net/ubuntu/+source/linux-nvidia-tegra/5.15.0-1061.61
https://launchpad.net/ubuntu/+source/linux-nvidia-tegra-igx/5.15.0-1050.50
https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1106.112
https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1103.106
https://launchpad.net/ubuntu/+source/linux-realtime/5.15.0-1108.117
[USN-8392-1] Linux kernel vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8392-1
June 04, 2026
linux-aws-5.4, linux-hwe-5.4 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
Details:
It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Packet sockets;
- RDS protocol;
- TLS protocol;
(CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077,
CVE-2026-43078, CVE-2026-43494, CVE-2026-46028)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS
linux-image-5.4.0-1160-aws 5.4.0-1160.170~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-231-generic 5.4.0-231.251~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-231-lowlatency 5.4.0-231.251~18.04.1
Available with Ubuntu Pro
linux-image-aws 5.4.0.1160.170~18.04.1
Available with Ubuntu Pro
linux-image-aws-5.4 5.4.0.1160.170~18.04.1
Available with Ubuntu Pro
linux-image-generic-5.4 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
linux-image-generic-hwe-18.04 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
linux-image-lowlatency-5.4 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
linux-image-lowlatency-hwe-18.04 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
linux-image-oem 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
linux-image-oem-osp1 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
linux-image-snapdragon-5.4 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
linux-image-snapdragon-hwe-18.04 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
linux-image-virtual-5.4 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
linux-image-virtual-hwe-18.04 5.4.0.231.251~18.04.1
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://ubuntu.com/security/notices/USN-8392-1
CVE-2026-31431, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033,
CVE-2026-43077, CVE-2026-43078, CVE-2026-43284, CVE-2026-43494,
CVE-2026-43500, CVE-2026-46028
[USN-8391-1] Linux kernel (Raspberry Pi) vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8391-1
June 04, 2026
linux-raspi, linux-raspi-5.4 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-raspi-5.4: Linux kernel for Raspberry Pi systems
Details:
It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Network drivers;
- NVME drivers;
- IPv4 networking;
- Packet sockets;
- RDS protocol;
- TLS protocol;
(CVE-2024-50304, CVE-2026-23112, CVE-2026-23209, CVE-2026-31504,
CVE-2026-31533, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078,
CVE-2026-43494, CVE-2026-46028)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
linux-image-5.4.0-1143-raspi 5.4.0-1143.156
Available with Ubuntu Pro
linux-image-raspi 5.4.0.1143.174
Available with Ubuntu Pro
linux-image-raspi-5.4 5.4.0.1143.174
Available with Ubuntu Pro
linux-image-raspi2 5.4.0.1143.174
Available with Ubuntu Pro
Ubuntu 18.04 LTS
linux-image-5.4.0-1143-raspi 5.4.0-1143.156~18.04.1
Available with Ubuntu Pro
linux-image-raspi-5.4 5.4.0.1143.156~18.04.1
Available with Ubuntu Pro
linux-image-raspi-hwe-18.04 5.4.0.1143.156~18.04.1
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://ubuntu.com/security/notices/USN-8391-1
CVE-2024-50304, CVE-2026-23112, CVE-2026-23209, CVE-2026-31431,
CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077,
CVE-2026-43078, CVE-2026-43284, CVE-2026-43494, CVE-2026-43500,
CVE-2026-46028
[USN-8390-1] Linux kernel vulnerability
==========================================================================
Ubuntu Security Notice USN-8390-1
June 04, 2026
linux, linux-azure, linux-azure-4.15, linux-azure-fips, linux-fips,
linux-gcp-4.15, linux-gcp-fips, linux-kvm, linux-oracle vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 14.04 LTS
Summary:
The system could be made to run programs as an administrator.
Software Description:
- linux: Linux kernel
- linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems
- linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS
- linux-fips: Linux kernel with FIPS
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with
FIPS
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
Details:
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS
linux-image-4.15.0-1148-fips 4.15.0-1148.160
Available with Ubuntu Pro
linux-image-4.15.0-1155-oracle 4.15.0-1155.166
Available with Ubuntu Pro
linux-image-4.15.0-1175-kvm 4.15.0-1175.180
Available with Ubuntu Pro
linux-image-4.15.0-1186-gcp 4.15.0-1186.203
Available with Ubuntu Pro
linux-image-4.15.0-1202-azure 4.15.0-1202.217
Available with Ubuntu Pro
linux-image-4.15.0-2094-gcp-fips 4.15.0-2094.100
Available with Ubuntu Pro
linux-image-4.15.0-2111-azure-fips 4.15.0-2111.117
Available with Ubuntu Pro
linux-image-4.15.0-251-generic 4.15.0-251.263
Available with Ubuntu Pro
linux-image-4.15.0-251-lowlatency 4.15.0-251.263
Available with Ubuntu Pro
linux-image-azure-4.15 4.15.0.1202.170
Available with Ubuntu Pro
linux-image-azure-fips 4.15.0.2111.107
Available with Ubuntu Pro
linux-image-azure-fips-4.15 4.15.0.2111.107
Available with Ubuntu Pro
linux-image-azure-lts-18.04 4.15.0.1202.170
Available with Ubuntu Pro
linux-image-fips 4.15.0.1148.145
Available with Ubuntu Pro
linux-image-gcp-4.15 4.15.0.1186.199
Available with Ubuntu Pro
linux-image-gcp-fips 4.15.0.2094.92
Available with Ubuntu Pro
linux-image-gcp-fips-4.15 4.15.0.2094.92
Available with Ubuntu Pro
linux-image-gcp-lts-18.04 4.15.0.1186.199
Available with Ubuntu Pro
linux-image-generic 4.15.0.251.235
Available with Ubuntu Pro
linux-image-kvm 4.15.0.1175.166
Available with Ubuntu Pro
linux-image-lowlatency 4.15.0.251.235
Available with Ubuntu Pro
linux-image-oracle-4.15 4.15.0.1155.160
Available with Ubuntu Pro
linux-image-oracle-lts-18.04 4.15.0.1155.160
Available with Ubuntu Pro
linux-image-virtual 4.15.0.251.235
Available with Ubuntu Pro
Ubuntu 14.04 LTS
linux-image-4.15.0-1202-azure 4.15.0-1202.217~14.04.1
Available with Ubuntu Pro
linux-image-azure 4.15.0.1202.217~14.04.1
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://ubuntu.com/security/notices/USN-8390-1
CVE-2026-43284
[USN-8389-1] Linux kernel vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8389-1
June 04, 2026
linux, linux-aws, linux-aws-fips, linux-azure, linux-azure-5.4,
linux-azure-fips, linux-bluefield, linux-fips, linux-gcp, linux-gcp-5.4,
linux-gcp-fips, linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4,
linux-xilinx-zynqmp vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS
- linux-bluefield: Linux kernel for NVIDIA BlueField platforms
- linux-fips: Linux kernel with FIPS
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with
FIPS
- linux-iot: Linux kernel for IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors
- linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems
Details:
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- RDS protocol;
(CVE-2026-43494)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
linux-image-5.4.0-1064-iot 5.4.0-1064.67
Available with Ubuntu Pro
linux-image-5.4.0-1078-xilinx-zynqmp 5.4.0-1078.82
Available with Ubuntu Pro
linux-image-5.4.0-1119-bluefield 5.4.0-1119.126
Available with Ubuntu Pro
linux-image-5.4.0-1134-fips 5.4.0-1134.144
Available with Ubuntu Pro
linux-image-5.4.0-1147-kvm 5.4.0-1147.156
Available with Ubuntu Pro
linux-image-5.4.0-1158-oracle 5.4.0-1158.168
Available with Ubuntu Pro
linux-image-5.4.0-1160-aws 5.4.0-1160.170
Available with Ubuntu Pro
linux-image-5.4.0-1160-aws-fips 5.4.0-1160.170+fips1
Available with Ubuntu Pro
linux-image-5.4.0-1163-gcp 5.4.0-1163.172
Available with Ubuntu Pro
linux-image-5.4.0-1163-gcp-fips 5.4.0-1163.172+fips1
Available with Ubuntu Pro
linux-image-5.4.0-1164-azure 5.4.0-1164.170
Available with Ubuntu Pro
linux-image-5.4.0-1164-azure-fips 5.4.0-1164.170+fips1
Available with Ubuntu Pro
linux-image-5.4.0-231-generic 5.4.0-231.251
Available with Ubuntu Pro
linux-image-5.4.0-231-generic-lpae 5.4.0-231.251
Available with Ubuntu Pro
linux-image-5.4.0-231-lowlatency 5.4.0-231.251
Available with Ubuntu Pro
linux-image-aws-5.4 5.4.0.1160.157
Available with Ubuntu Pro
linux-image-aws-fips 5.4.0.1160.107
Available with Ubuntu Pro
linux-image-aws-fips-5.4 5.4.0.1160.107
Available with Ubuntu Pro
linux-image-aws-lts-20.04 5.4.0.1160.157
Available with Ubuntu Pro
linux-image-azure-5.4 5.4.0.1164.156
Available with Ubuntu Pro
linux-image-azure-fips 5.4.0.1164.100
Available with Ubuntu Pro
linux-image-azure-fips-5.4 5.4.0.1164.100
Available with Ubuntu Pro
linux-image-azure-lts-20.04 5.4.0.1164.156
Available with Ubuntu Pro
linux-image-bluefield 5.4.0.1119.115
Available with Ubuntu Pro
linux-image-bluefield-5.4 5.4.0.1119.115
Available with Ubuntu Pro
linux-image-fips 5.4.0.1134.131
Available with Ubuntu Pro
linux-image-fips-5.4 5.4.0.1134.131
Available with Ubuntu Pro
linux-image-gcp-5.4 5.4.0.1163.165
Available with Ubuntu Pro
linux-image-gcp-fips 5.4.0.1163.105
Available with Ubuntu Pro
linux-image-gcp-fips-5.4 5.4.0.1163.105
Available with Ubuntu Pro
linux-image-gcp-lts-20.04 5.4.0.1163.165
Available with Ubuntu Pro
linux-image-generic 5.4.0.231.223
Available with Ubuntu Pro
linux-image-generic-5.4 5.4.0.231.223
Available with Ubuntu Pro
linux-image-generic-lpae 5.4.0.231.223
Available with Ubuntu Pro
linux-image-generic-lpae-5.4 5.4.0.231.223
Available with Ubuntu Pro
linux-image-kvm 5.4.0.1147.143
Available with Ubuntu Pro
linux-image-kvm-5.4 5.4.0.1147.143
Available with Ubuntu Pro
linux-image-lowlatency 5.4.0.231.223
Available with Ubuntu Pro
linux-image-lowlatency-5.4 5.4.0.231.223
Available with Ubuntu Pro
linux-image-oem 5.4.0.231.223
Available with Ubuntu Pro
linux-image-oem-osp1 5.4.0.231.223
Available with Ubuntu Pro
linux-image-oracle-5.4 5.4.0.1158.152
Available with Ubuntu Pro
linux-image-oracle-lts-20.04 5.4.0.1158.152
Available with Ubuntu Pro
linux-image-virtual 5.4.0.231.223
Available with Ubuntu Pro
linux-image-virtual-5.4 5.4.0.231.223
Available with Ubuntu Pro
linux-image-xilinx-zynqmp 5.4.0.1078.78
Available with Ubuntu Pro
linux-image-xilinx-zynqmp-5.4 5.4.0.1078.78
Available with Ubuntu Pro
Ubuntu 18.04 LTS
linux-image-5.4.0-1158-oracle 5.4.0-1158.168~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1163-gcp 5.4.0-1163.172~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1164-azure 5.4.0-1164.170~18.04.1
Available with Ubuntu Pro
linux-image-azure 5.4.0.1164.170~18.04.1
Available with Ubuntu Pro
linux-image-azure-5.4 5.4.0.1164.170~18.04.1
Available with Ubuntu Pro
linux-image-gcp 5.4.0.1163.172~18.04.1
Available with Ubuntu Pro
linux-image-gcp-5.4 5.4.0.1163.172~18.04.1
Available with Ubuntu Pro
linux-image-oracle 5.4.0.1158.168~18.04.1
Available with Ubuntu Pro
linux-image-oracle-5.4 5.4.0.1158.168~18.04.1
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://ubuntu.com/security/notices/USN-8389-1
CVE-2026-43284, CVE-2026-43494, CVE-2026-43500
