Ubuntu 6905 Published by

Ubuntu has issued several security notices to address vulnerabilities in various packages, including the Linux kernel, libssh, Squid, Unbound, and OpenStack Keystone. The most critical vulnerability was found in the Linux kernel (HWE) package, which affects Ubuntu 24.04 LTS and allows an attacker to infer data from previous stores on AMD processors. Additionally, vulnerabilities were discovered in libssh, which could be made to crash if it received specially crafted network traffic, and Squid, which could be made to crash due to incorrect handling of certain long SNMP OIDs.

[USN-7829-6] Linux kernel vulnerabilities
[USN-7856-1] Linux kernel (HWE) vulnerabilities
[USN-7849-1] libssh vulnerability
[USN-7804-2] Squid vulnerability
[USN-7855-1] Unbound vulnerability
[USN-7857-1] OpenStack Keystone vulnerability



[USN-7829-6] Linux kernel vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7829-6
November 04, 2025

linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx,
linux-raspi 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-nvidia-tegra: Linux kernel for NVIDIA Tegra systems
- linux-nvidia-tegra-igx: Linux kernel for NVIDIA Tegra IGX systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-nvidia-tegra-5.15: Linux kernel for NVIDIA Tegra systems

Details:

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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
linux-image-5.15.0-1036-nvidia-tegra-igx 5.15.0-1036.36
linux-image-5.15.0-1036-nvidia-tegra-igx-rt 5.15.0-1036.36
linux-image-5.15.0-1047-nvidia-tegra 5.15.0-1047.47
linux-image-5.15.0-1047-nvidia-tegra-rt 5.15.0-1047.47
linux-image-5.15.0-1089-raspi 5.15.0-1089.92
linux-image-nvidia-tegra 5.15.0.1047.47
linux-image-nvidia-tegra-5.15 5.15.0.1047.47
linux-image-nvidia-tegra-igx 5.15.0.1036.38
linux-image-nvidia-tegra-igx-5.15 5.15.0.1036.38
linux-image-nvidia-tegra-igx-rt 5.15.0.1036.38
linux-image-nvidia-tegra-igx-rt-5.15 5.15.0.1036.38
linux-image-nvidia-tegra-rt 5.15.0.1047.47
linux-image-nvidia-tegra-rt-5.15 5.15.0.1047.47
linux-image-raspi 5.15.0.1089.87
linux-image-raspi-5.15 5.15.0.1089.87
linux-image-raspi-nolpae 5.15.0.1089.87

Ubuntu 20.04 LTS
linux-image-5.15.0-1047-nvidia-tegra 5.15.0-1047.47~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1047-nvidia-tegra-rt 5.15.0-1047.47~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra 5.15.0.1047.47~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-5.15 5.15.0.1047.47~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-rt 5.15.0.1047.47~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-rt-5.15 5.15.0.1047.47~20.04.1
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-7829-6
https://ubuntu.com/security/notices/USN-7829-5
https://ubuntu.com/security/notices/USN-7829-4
https://ubuntu.com/security/notices/USN-7829-3
https://ubuntu.com/security/notices/USN-7829-2
https://ubuntu.com/security/notices/USN-7829-1
CVE-2023-52593, CVE-2024-26700, CVE-2024-26896, CVE-2025-38727

Package Information:
https://launchpad.net/ubuntu/+source/linux-nvidia-tegra/5.15.0-1047.47
https://launchpad.net/ubuntu/+source/linux-nvidia-tegra-igx/5.15.0-1036.36
https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1089.92



[USN-7856-1] Linux kernel (HWE) vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7856-1
November 04, 2025

linux-hwe-6.14 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-hwe-6.14: Linux hardware enablement (HWE) kernel

Details:

Oleksii Oleksenko, Cedric Fournet, Jana Hofmann, Boris Köpf, Stavros Volos,
and Flavien Solt discovered that some AMD processors may allow an attacker
to infer data from previous stores, potentially resulting in the leakage of
privileged information. A local attacker could possibly use this to expose
sensitive information. (CVE-2024-36350, CVE-2024-36357)

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;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- ATM drivers;
- Drivers core;
- ATA over ethernet (AOE) driver;
- Ublk userspace block driver;
- Bus devices;
- DMA engine subsystem;
- Arm Firmware Framework for ARMv8-A(FFA);
- Cirrus firmware drivers;
- GPU drivers;
- HID subsystem;
- Hardware monitoring drivers;
- I2C subsystem;
- InfiniBand drivers;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- TI TPS6594 PFSM driver;
- MMC subsystem;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- x86 platform drivers;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- Remote Processor subsystem;
- S/390 drivers;
- SCSI subsystem;
- TCM subsystem;
- Trusted Execution Environment drivers;
- TTY drivers;
- ChipIdea USB driver;
- USB Type-C support driver;
- Framebuffer layer;
- TSM Common Guest driver;
- File systems infrastructure;
- BTRFS file system;
- Ceph distributed file system;
- Ext4 file system;
- F2FS file system;
- JFFS2 file system;
- JFS file system;
- Network file systems library;
- Network file system (NFS) client;
- Network file system (NFS) server daemon;
- SMB network file system;
- Asynchronous Transfer Mode (ATM) subsystem;
- Memory Management;
- Bluetooth subsystem;
- Tracing infrastructure;
- io_uring subsystem;
- IPC subsystem;
- BPF subsystem;
- Perf events;
- Kernel exit() syscall;
- IRQ subsystem;
- Scheduler infrastructure;
- Maple Tree data structure library;
- Memory management;
- Ethernet bridge;
- Networking core;
- IPv6 networking;
- MultiProtocol Label Switching driver;
- Netfilter;
- NFC subsystem;
- Rose network layer;
- Network traffic control;
- Sun RPC protocol;
- TIPC protocol;
- TLS protocol;
- Unix domain sockets;
- VMware vSockets driver;
- WCD audio codecs;
- USB sound devices;
(CVE-2025-38084, CVE-2025-38085, CVE-2025-38086, CVE-2025-38087,
CVE-2025-38089, CVE-2025-38090, CVE-2025-38179, CVE-2025-38180,
CVE-2025-38181, CVE-2025-38182, CVE-2025-38183, CVE-2025-38184,
CVE-2025-38185, CVE-2025-38186, CVE-2025-38188, CVE-2025-38189,
CVE-2025-38190, CVE-2025-38191, CVE-2025-38192, CVE-2025-38193,
CVE-2025-38194, CVE-2025-38196, CVE-2025-38197, CVE-2025-38198,
CVE-2025-38199, CVE-2025-38200, CVE-2025-38201, CVE-2025-38202,
CVE-2025-38203, CVE-2025-38204, CVE-2025-38205, CVE-2025-38206,
CVE-2025-38208, CVE-2025-38210, CVE-2025-38211, CVE-2025-38212,
CVE-2025-38214, CVE-2025-38215, CVE-2025-38217, CVE-2025-38218,
CVE-2025-38219, CVE-2025-38220, CVE-2025-38222, CVE-2025-38223,
CVE-2025-38224, CVE-2025-38225, CVE-2025-38226, CVE-2025-38227,
CVE-2025-38228, CVE-2025-38229, CVE-2025-38230, CVE-2025-38231,
CVE-2025-38232, CVE-2025-38233, CVE-2025-38234, CVE-2025-38236,
CVE-2025-38237, CVE-2025-38238, CVE-2025-38239, CVE-2025-38241,
CVE-2025-38242, CVE-2025-38244, CVE-2025-38245, CVE-2025-38246,
CVE-2025-38248, CVE-2025-38249, CVE-2025-38250, CVE-2025-38251,
CVE-2025-38253, CVE-2025-38254, CVE-2025-38255, CVE-2025-38256,
CVE-2025-38257, CVE-2025-38258, CVE-2025-38259, CVE-2025-38260,
CVE-2025-38261, CVE-2025-38262, CVE-2025-38263, CVE-2025-38264,
CVE-2025-38320, CVE-2025-38321, CVE-2025-38322, CVE-2025-38323,
CVE-2025-38324, CVE-2025-38325, CVE-2025-38326, CVE-2025-38328,
CVE-2025-38329, CVE-2025-38330, CVE-2025-38331, CVE-2025-38332,
CVE-2025-38333, CVE-2025-38334, CVE-2025-38336, CVE-2025-38337,
CVE-2025-38338, CVE-2025-38339, CVE-2025-38340, CVE-2025-38341,
CVE-2025-38342, CVE-2025-38343, CVE-2025-38344, CVE-2025-38345,
CVE-2025-38346, CVE-2025-38347, CVE-2025-38348, CVE-2025-38353,
CVE-2025-38354, CVE-2025-38355, CVE-2025-38356, CVE-2025-38359,
CVE-2025-38360, CVE-2025-38361, CVE-2025-38362, CVE-2025-38363,
CVE-2025-38364, CVE-2025-38365, CVE-2025-38368, CVE-2025-38369,
CVE-2025-38370, CVE-2025-38371, CVE-2025-38372, CVE-2025-38373,
CVE-2025-38374, CVE-2025-38375, CVE-2025-38376, CVE-2025-38377,
CVE-2025-38381, CVE-2025-38382, CVE-2025-38383, CVE-2025-38384,
CVE-2025-38385, CVE-2025-38386, CVE-2025-38387, CVE-2025-38388,
CVE-2025-38389, CVE-2025-38390, CVE-2025-38391, CVE-2025-38392,
CVE-2025-38393, CVE-2025-38395, CVE-2025-38396, CVE-2025-38399,
CVE-2025-38400, CVE-2025-38401, CVE-2025-38402, CVE-2025-38403,
CVE-2025-38405, CVE-2025-38406, CVE-2025-38407, CVE-2025-38408,
CVE-2025-38409, CVE-2025-38410, CVE-2025-38411, CVE-2025-38412,
CVE-2025-38413, CVE-2025-38416, CVE-2025-38417, CVE-2025-38418,
CVE-2025-38419, CVE-2025-38420, CVE-2025-38421, CVE-2025-38422,
CVE-2025-38423, CVE-2025-38424, CVE-2025-38425, CVE-2025-38426,
CVE-2025-38427, CVE-2025-38428, CVE-2025-38429, CVE-2025-38430,
CVE-2025-38431, CVE-2025-38434, CVE-2025-38435, CVE-2025-38436,
CVE-2025-38523, CVE-2025-38541, CVE-2025-39682)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
linux-image-6.14.0-34-generic 6.14.0-34.34~24.04.1
linux-image-6.14.0-34-generic-64k 6.14.0-34.34~24.04.1
linux-image-generic-6.14 6.14.0-34.34~24.04.1
linux-image-generic-64k-6.14 6.14.0-34.34~24.04.1
linux-image-generic-64k-hwe-24.04 6.14.0-34.34~24.04.1
linux-image-generic-hwe-24.04 6.14.0-34.34~24.04.1
linux-image-virtual-6.14 6.14.0-34.34~24.04.1
linux-image-virtual-hwe-24.04 6.14.0-34.34~24.04.1

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-7856-1
CVE-2024-36350, CVE-2024-36357, CVE-2025-38084, CVE-2025-38085,
CVE-2025-38086, CVE-2025-38087, CVE-2025-38089, CVE-2025-38090,
CVE-2025-38179, CVE-2025-38180, CVE-2025-38181, CVE-2025-38182,
CVE-2025-38183, CVE-2025-38184, CVE-2025-38185, CVE-2025-38186,
CVE-2025-38188, CVE-2025-38189, CVE-2025-38190, CVE-2025-38191,
CVE-2025-38192, CVE-2025-38193, CVE-2025-38194, CVE-2025-38196,
CVE-2025-38197, CVE-2025-38198, CVE-2025-38199, CVE-2025-38200,
CVE-2025-38201, CVE-2025-38202, CVE-2025-38203, CVE-2025-38204,
CVE-2025-38205, CVE-2025-38206, CVE-2025-38208, CVE-2025-38210,
CVE-2025-38211, CVE-2025-38212, CVE-2025-38214, CVE-2025-38215,
CVE-2025-38217, CVE-2025-38218, CVE-2025-38219, CVE-2025-38220,
CVE-2025-38222, CVE-2025-38223, CVE-2025-38224, CVE-2025-38225,
CVE-2025-38226, CVE-2025-38227, CVE-2025-38228, CVE-2025-38229,
CVE-2025-38230, CVE-2025-38231, CVE-2025-38232, CVE-2025-38233,
CVE-2025-38234, CVE-2025-38236, CVE-2025-38237, CVE-2025-38238,
CVE-2025-38239, CVE-2025-38241, CVE-2025-38242, CVE-2025-38244,
CVE-2025-38245, CVE-2025-38246, CVE-2025-38248, CVE-2025-38249,
CVE-2025-38250, CVE-2025-38251, CVE-2025-38253, CVE-2025-38254,
CVE-2025-38255, CVE-2025-38256, CVE-2025-38257, CVE-2025-38258,
CVE-2025-38259, CVE-2025-38260, CVE-2025-38261, CVE-2025-38262,
CVE-2025-38263, CVE-2025-38264, CVE-2025-38320, CVE-2025-38321,
CVE-2025-38322, CVE-2025-38323, CVE-2025-38324, CVE-2025-38325,
CVE-2025-38326, CVE-2025-38328, CVE-2025-38329, CVE-2025-38330,
CVE-2025-38331, CVE-2025-38332, CVE-2025-38333, CVE-2025-38334,
CVE-2025-38336, CVE-2025-38337, CVE-2025-38338, CVE-2025-38339,
CVE-2025-38340, CVE-2025-38341, CVE-2025-38342, CVE-2025-38343,
CVE-2025-38344, CVE-2025-38345, CVE-2025-38346, CVE-2025-38347,
CVE-2025-38348, CVE-2025-38353, CVE-2025-38354, CVE-2025-38355,
CVE-2025-38356, CVE-2025-38359, CVE-2025-38360, CVE-2025-38361,
CVE-2025-38362, CVE-2025-38363, CVE-2025-38364, CVE-2025-38365,
CVE-2025-38368, CVE-2025-38369, CVE-2025-38370, CVE-2025-38371,
CVE-2025-38372, CVE-2025-38373, CVE-2025-38374, CVE-2025-38375,
CVE-2025-38376, CVE-2025-38377, CVE-2025-38381, CVE-2025-38382,
CVE-2025-38383, CVE-2025-38384, CVE-2025-38385, CVE-2025-38386,
CVE-2025-38387, CVE-2025-38388, CVE-2025-38389, CVE-2025-38390,
CVE-2025-38391, CVE-2025-38392, CVE-2025-38393, CVE-2025-38395,
CVE-2025-38396, CVE-2025-38399, CVE-2025-38400, CVE-2025-38401,
CVE-2025-38402, CVE-2025-38403, CVE-2025-38405, CVE-2025-38406,
CVE-2025-38407, CVE-2025-38408, CVE-2025-38409, CVE-2025-38410,
CVE-2025-38411, CVE-2025-38412, CVE-2025-38413, CVE-2025-38416,
CVE-2025-38417, CVE-2025-38418, CVE-2025-38419, CVE-2025-38420,
CVE-2025-38421, CVE-2025-38422, CVE-2025-38423, CVE-2025-38424,
CVE-2025-38425, CVE-2025-38426, CVE-2025-38427, CVE-2025-38428,
CVE-2025-38429, CVE-2025-38430, CVE-2025-38431, CVE-2025-38434,
CVE-2025-38435, CVE-2025-38436, CVE-2025-38523, CVE-2025-38541,
CVE-2025-39682

Package Information:
https://launchpad.net/ubuntu/+source/linux-hwe-6.14/6.14.0-34.34~24.04.1



[USN-7849-1] libssh vulnerability


==========================================================================
Ubuntu Security Notice USN-7849-1
November 04, 2025

libssh vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

libssh could be made to crash.

Software Description:
- libssh: A tiny C SSH library

Details:

Philippe Antoine discovered that libssh did not properly manage memory
when calculating a session id during the key exchange process. An attacker
could possibly use this issue to cause libssh to crash, resulting in a
denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
libssh-4 0.11.2-1ubuntu0.1

Ubuntu 25.04
libssh-4 0.11.1-1ubuntu0.2

Ubuntu 24.04 LTS
libssh-4 0.10.6-2ubuntu0.2
libssh-gcrypt-4 0.10.6-2ubuntu0.2

Ubuntu 22.04 LTS
libssh-4 0.9.6-2ubuntu0.22.04.5
libssh-gcrypt-4 0.9.6-2ubuntu0.22.04.5

Ubuntu 20.04 LTS
libssh-4 0.9.3-2ubuntu2.5+esm2
Available with Ubuntu Pro
libssh-gcrypt-4 0.9.3-2ubuntu2.5+esm2
Available with Ubuntu Pro

Ubuntu 18.04 LTS
libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5
Available with Ubuntu Pro
libssh-gcrypt-4 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libssh-4 0.6.3-4.3ubuntu0.6+esm3
Available with Ubuntu Pro
libssh-gcrypt-4 0.6.3-4.3ubuntu0.6+esm3
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7849-1
CVE-2025-8114

Package Information:
https://launchpad.net/ubuntu/+source/libssh/0.11.2-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libssh/0.11.1-1ubuntu0.2
https://launchpad.net/ubuntu/+source/libssh/0.10.6-2ubuntu0.2
https://launchpad.net/ubuntu/+source/libssh/0.9.6-2ubuntu0.22.04.5



[USN-7804-2] Squid vulnerability


==========================================================================
Ubuntu Security Notice USN-7804-2
November 04, 2025

squid, squid3 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Squid could be made to crash if it received specially crafted network
traffic.

Software Description:
- squid: Web proxy cache server
- squid3: Web proxy cache server

Details:

USN-7804-1 fixed a vulnerability in Squid. This update provides the
corresponding update for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu
20.04 LTS.

Original advisory details:

It was discovered that Squid incorrectly handled certain long SNMP OIDs. A
remote attacker could possibly use this issue to cause Squid to crash,
resulting in a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS
squid 4.10-1ubuntu1.13+esm2
Available with Ubuntu Pro

Ubuntu 18.04 LTS
squid 3.5.27-1ubuntu1.14+esm5
Available with Ubuntu Pro
squid3 3.5.27-1ubuntu1.14+esm5
Available with Ubuntu Pro

Ubuntu 16.04 LTS
squid 3.5.12-1ubuntu7.16+esm6
Available with Ubuntu Pro
squid3 3.5.12-1ubuntu7.16+esm6
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7804-2
https://ubuntu.com/security/notices/USN-7804-1
CVE-2025-59362



[USN-7855-1] Unbound vulnerability


==========================================================================
Ubuntu Security Notice USN-7855-1
November 04, 2025

unbound vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Unbound could be made to hijack domains if it received specially crafted
network traffic.

Software Description:
- unbound: validating, recursive, caching DNS resolver

Details:

Yuxiao Wu, Yunyi Zhang, Baojun Liu, and Haixin Duan discovered that Unbound
incorrectly handled certain promiscuous NS RRSets. A remote attacker could
possibly use this issue to perform a domain hijack attack.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
libunbound8 1.22.0-2ubuntu2.1
unbound 1.22.0-2ubuntu2.1

Ubuntu 25.04
libunbound8 1.22.0-1ubuntu1.2
unbound 1.22.0-1ubuntu1.2

Ubuntu 24.04 LTS
libunbound8 1.19.2-1ubuntu3.6
unbound 1.19.2-1ubuntu3.6

Ubuntu 22.04 LTS
libunbound8 1.13.1-1ubuntu5.13
unbound 1.13.1-1ubuntu5.13

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7855-1
CVE-2025-11411

Package Information:
https://launchpad.net/ubuntu/+source/unbound/1.22.0-2ubuntu2.1
https://launchpad.net/ubuntu/+source/unbound/1.22.0-1ubuntu1.2
https://launchpad.net/ubuntu/+source/unbound/1.19.2-1ubuntu3.6
https://launchpad.net/ubuntu/+source/unbound/1.13.1-1ubuntu5.13



[USN-7857-1] OpenStack Keystone vulnerability


==========================================================================
Ubuntu Security Notice USN-7857-1
November 04, 2025

keystone vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS

Summary:

OpenStack Keystone could allow unintended access to network services.

Software Description:
- keystone: OpenStack identity service

Details:

Kay discovered that OpenStack Keystone incorrectly handled the ec2tokens
and s3tokens APIs. A remote attacker could possibly use this issue to
obtain unauthorized access and escalate privileges.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
keystone 2:28.0.0-0ubuntu1.1
python3-keystone 2:28.0.0-0ubuntu1.1

Ubuntu 25.04
keystone 2:27.0.0-0ubuntu1.1
python3-keystone 2:27.0.0-0ubuntu1.1

Ubuntu 24.04 LTS
keystone 2:25.0.0-0ubuntu1.1
python3-keystone 2:25.0.0-0ubuntu1.1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7857-1
https://launchpad.net/bugs/2130629

Package Information:
https://launchpad.net/ubuntu/+source/keystone/2:28.0.0-0ubuntu1.1
https://launchpad.net/ubuntu/+source/keystone/2:27.0.0-0ubuntu1.1
https://launchpad.net/ubuntu/+source/keystone/2:25.0.0-0ubuntu1.1