[USN-8195-1] PackageKit vulnerability
[USN-8196-1] strongSwan vulnerabilities
[USN-8200-2] Linux kernel (FIPS) vulnerabilities
[USN-8201-1] Linux kernel (Azure) vulnerabilities
[USN-8200-1] Linux kernel vulnerabilities
[USN-8195-1] PackageKit vulnerability
==========================================================================
Ubuntu Security Notice USN-8195-1
April 22, 2026
packagekit vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
PackageKit could be made to install packages as the administrator.
Software Description:
- packagekit: Provides a package management service
Details:
It was discovered that PackageKit incorrectly handled certain transactions.
A local attacker could use this issue to install arbitrary packages as
root, possibly resulting in privilege escalation.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
packagekit 1.3.1-1ubuntu1.1
Ubuntu 24.04 LTS
packagekit 1.2.8-2ubuntu1.5
Ubuntu 22.04 LTS
packagekit 1.2.5-2ubuntu3.1
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8195-1
https://launchpad.net/bugs/2149908
Package Information:
https://launchpad.net/ubuntu/+source/packagekit/1.3.1-1ubuntu1.1
https://launchpad.net/ubuntu/+source/packagekit/1.2.8-2ubuntu1.5
https://launchpad.net/ubuntu/+source/packagekit/1.2.5-2ubuntu3.1
[USN-8196-1] strongSwan vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8196-1
April 22, 2026
strongswan vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
Several security issues were fixed in strongSwan.
Software Description:
- strongswan: IPsec VPN solution
Details:
Haruto Kimura discovered that strongSwan incorrectly handled the
supported_versions extension in TLS. A remote attacker could possibly use
this issue to cause strongSwan to stop responding, resulting in a denial
of service. (CVE-2026-35328)
Haruto Kimura discovered that strongSwan incorrectly handled certain
encrypted PKCS#7 containers. A remote attacker could possibly use this
issue to cause strongSwan to crash, resulting in a denial of service.
(CVE-2026-35329)
Lukas Johannes Moeller discovered that strongSwan incorrectly handled
certain EAP-SIM/AKA attributes. A remote attacker could use this issue to
cause strongSwan to stop responding, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2026-35330)
Haruto Kimura discovered that strongSwan incorrectly handled processing of
X.509 name constraints. A remote attacker could possibly use this issue to
bypass excluded name constraints. (CVE-2026-35331)
Haruto Kimura discovered that strongSwan incorrectly processed ECDH public
values. A remote attacker could possibly use this issue to cause strongSwan
to crash, resulting in a denial of service. (CVE-2026-35332)
Lukas Johannes Moeller discovered that strongSwan incorrectly handled
certain RADIUS attributes. A remote attacker could possibly use this issue
to cause strongSwan to crash, resulting in a denial of service.
(CVE-2026-35333)
Ryo Shimada discovered that strongSwan incorrectly handled RSA decryption.
A remote attacker could possibly use this issue to cause strongSwan to
crash, resulting in a denial of service. (CVE-2026-35334)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
libstrongswan 6.0.1-6ubuntu4.3
strongswan 6.0.1-6ubuntu4.3
Ubuntu 24.04 LTS
libstrongswan 5.9.13-2ubuntu4.24.04.3
strongswan 5.9.13-2ubuntu4.24.04.3
Ubuntu 22.04 LTS
libstrongswan 5.9.5-2ubuntu2.6
strongswan 5.9.5-2ubuntu2.6
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8196-1
CVE-2026-35328, CVE-2026-35329, CVE-2026-35330, CVE-2026-35331,
CVE-2026-35332, CVE-2026-35333, CVE-2026-35334
Package Information:
https://launchpad.net/ubuntu/+source/strongswan/6.0.1-6ubuntu4.3
https://launchpad.net/ubuntu/+source/strongswan/5.9.13-2ubuntu4.24.04.3
https://launchpad.net/ubuntu/+source/strongswan/5.9.5-2ubuntu2.6
[USN-8200-2] Linux kernel (FIPS) vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8200-2
April 22, 2026
linux-fips, linux-aws-fips, linux-azure-fips, linux-gcp-fips
vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS
- linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS
- linux-fips: Linux kernel with FIPS
- linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with
FIPS
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:
- ARM64 architecture;
- Cryptographic API;
- GPU drivers;
- I2C subsystem;
- Network traffic control;
(CVE-2022-49046, CVE-2024-46816, CVE-2025-37849, CVE-2026-23060,
CVE-2026-23074)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
linux-image-5.4.0-1131-fips 5.4.0-1131.141
Available with Ubuntu Pro
linux-image-5.4.0-1157-aws-fips 5.4.0-1157.167+fips1
Available with Ubuntu Pro
linux-image-5.4.0-1160-gcp-fips 5.4.0-1160.169+fips1
Available with Ubuntu Pro
linux-image-5.4.0-1161-azure-fips 5.4.0-1161.167+fips1
Available with Ubuntu Pro
linux-image-aws-fips 5.4.0.1157.104
Available with Ubuntu Pro
linux-image-aws-fips-5.4 5.4.0.1157.104
Available with Ubuntu Pro
linux-image-azure-fips 5.4.0.1161.97
Available with Ubuntu Pro
linux-image-azure-fips-5.4 5.4.0.1161.97
Available with Ubuntu Pro
linux-image-fips 5.4.0.1131.128
Available with Ubuntu Pro
linux-image-fips-5.4 5.4.0.1131.128
Available with Ubuntu Pro
linux-image-gcp-fips 5.4.0.1160.102
Available with Ubuntu Pro
linux-image-gcp-fips-5.4 5.4.0.1160.102
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-8200-2
https://ubuntu.com/security/notices/USN-8200-1
CVE-2022-49046, CVE-2024-46816, CVE-2025-37849, CVE-2026-23060,
CVE-2026-23074
[USN-8201-1] Linux kernel (Azure) vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8201-1
April 22, 2026
linux-azure-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-azure-5.4: Linux kernel for Microsoft Azure cloud systems
Details:
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853, CVE-2026-23268, CVE-2026-23269, CVE-2026-23403,
CVE-2026-23404, CVE-2026-23405, CVE-2026-23406, CVE-2026-23407,
CVE-2026-23408, CVE-2026-23409, CVE-2026-23410, CVE-2026-23411)
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;
- GPIO subsystem;
- GPU drivers;
- I2C subsystem;
- BTRFS file system;
- XFRM subsystem;
- IPv4 networking;
- IPv6 networking;
- MAC80211 subsystem;
- Network traffic control;
- SMC sockets;
(CVE-2021-47599, CVE-2022-48875, CVE-2022-49046, CVE-2022-49072,
CVE-2024-46816, CVE-2024-49927, CVE-2024-56640, CVE-2025-21780,
CVE-2025-37849, CVE-2025-40215, CVE-2026-23060, CVE-2026-23074)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS
linux-image-5.4.0-1161-azure 5.4.0-1161.167~18.04.1
Available with Ubuntu Pro
linux-image-azure 5.4.0.1161.167~18.04.1
Available with Ubuntu Pro
linux-image-azure-5.4 5.4.0.1161.167~18.04.1
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-8201-1
https://launchpad.net/bugs/2143853
CVE-2021-47599, CVE-2022-48875, CVE-2022-49046, CVE-2022-49072,
CVE-2024-46816, CVE-2024-49927, CVE-2024-56640, CVE-2025-21780,
CVE-2025-37849, CVE-2025-40215, CVE-2026-23060, CVE-2026-23074,
CVE-2026-23268, CVE-2026-23269, CVE-2026-23403, CVE-2026-23404,
CVE-2026-23405, CVE-2026-23406, CVE-2026-23407, CVE-2026-23409,
CVE-2026-23410, CVE-2026-23411
[USN-8200-1] Linux kernel vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8200-1
April 22, 2026
linux, linux-aws, linux-aws-5.4, linux-azure, linux-gcp, linux-gcp-5.4,
linux-hwe-5.4, linux-ibm, linux-ibm-5.4, 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-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-ibm: Linux kernel for IBM cloud systems
- 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-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-ibm-5.4: Linux kernel for IBM cloud systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud 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:
- ARM64 architecture;
- Cryptographic API;
- GPU drivers;
- I2C subsystem;
- Network traffic control;
(CVE-2022-49046, CVE-2024-46816, CVE-2025-37849, CVE-2026-23060,
CVE-2026-23074)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
linux-image-5.4.0-1061-iot 5.4.0-1061.64
Available with Ubuntu Pro
linux-image-5.4.0-1075-xilinx-zynqmp 5.4.0-1075.79
Available with Ubuntu Pro
linux-image-5.4.0-1103-ibm 5.4.0-1103.108
Available with Ubuntu Pro
linux-image-5.4.0-1144-kvm 5.4.0-1144.153
Available with Ubuntu Pro
linux-image-5.4.0-1155-oracle 5.4.0-1155.165
Available with Ubuntu Pro
linux-image-5.4.0-1157-aws 5.4.0-1157.167
Available with Ubuntu Pro
linux-image-5.4.0-1160-gcp 5.4.0-1160.169
Available with Ubuntu Pro
linux-image-5.4.0-1161-azure 5.4.0-1161.167
Available with Ubuntu Pro
linux-image-5.4.0-228-generic 5.4.0-228.248
Available with Ubuntu Pro
linux-image-5.4.0-228-generic-lpae 5.4.0-228.248
Available with Ubuntu Pro
linux-image-5.4.0-228-lowlatency 5.4.0-228.248
Available with Ubuntu Pro
linux-image-aws-5.4 5.4.0.1157.154
Available with Ubuntu Pro
linux-image-aws-lts-20.04 5.4.0.1157.154
Available with Ubuntu Pro
linux-image-azure-5.4 5.4.0.1161.153
Available with Ubuntu Pro
linux-image-azure-lts-20.04 5.4.0.1161.153
Available with Ubuntu Pro
linux-image-gcp-5.4 5.4.0.1160.162
Available with Ubuntu Pro
linux-image-gcp-lts-20.04 5.4.0.1160.162
Available with Ubuntu Pro
linux-image-generic 5.4.0.228.220
Available with Ubuntu Pro
linux-image-generic-5.4 5.4.0.228.220
Available with Ubuntu Pro
linux-image-generic-hwe-18.04 5.4.0.228.220
Available with Ubuntu Pro
linux-image-generic-lpae 5.4.0.228.220
Available with Ubuntu Pro
linux-image-generic-lpae-5.4 5.4.0.228.220
Available with Ubuntu Pro
linux-image-generic-lpae-hwe-18.04 5.4.0.228.220
Available with Ubuntu Pro
linux-image-ibm-5.4 5.4.0.1103.132
Available with Ubuntu Pro
linux-image-ibm-lts-20.04 5.4.0.1103.132
Available with Ubuntu Pro
linux-image-kvm 5.4.0.1144.140
Available with Ubuntu Pro
linux-image-kvm-5.4 5.4.0.1144.140
Available with Ubuntu Pro
linux-image-lowlatency 5.4.0.228.220
Available with Ubuntu Pro
linux-image-lowlatency-5.4 5.4.0.228.220
Available with Ubuntu Pro
linux-image-lowlatency-hwe-18.04 5.4.0.228.220
Available with Ubuntu Pro
linux-image-oem 5.4.0.228.220
Available with Ubuntu Pro
linux-image-oem-osp1 5.4.0.228.220
Available with Ubuntu Pro
linux-image-oracle-5.4 5.4.0.1155.149
Available with Ubuntu Pro
linux-image-oracle-lts-20.04 5.4.0.1155.149
Available with Ubuntu Pro
linux-image-virtual 5.4.0.228.220
Available with Ubuntu Pro
linux-image-virtual-5.4 5.4.0.228.220
Available with Ubuntu Pro
linux-image-virtual-hwe-18.04 5.4.0.228.220
Available with Ubuntu Pro
linux-image-xilinx-zynqmp 5.4.0.1075.75
Available with Ubuntu Pro
linux-image-xilinx-zynqmp-5.4 5.4.0.1075.75
Available with Ubuntu Pro
Ubuntu 18.04 LTS
linux-image-5.4.0-1103-ibm 5.4.0-1103.108~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1155-oracle 5.4.0-1155.165~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1157-aws 5.4.0-1157.167~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1160-gcp 5.4.0-1160.169~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-228-generic 5.4.0-228.248~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-228-lowlatency 5.4.0-228.248~18.04.1
Available with Ubuntu Pro
linux-image-aws 5.4.0.1157.167~18.04.1
Available with Ubuntu Pro
linux-image-aws-5.4 5.4.0.1157.167~18.04.1
Available with Ubuntu Pro
linux-image-gcp 5.4.0.1160.169~18.04.1
Available with Ubuntu Pro
linux-image-gcp-5.4 5.4.0.1160.169~18.04.1
Available with Ubuntu Pro
linux-image-generic-5.4 5.4.0.228.248~18.04.1
Available with Ubuntu Pro
linux-image-generic-hwe-18.04 5.4.0.228.248~18.04.1
Available with Ubuntu Pro
linux-image-ibm 5.4.0.1103.108~18.04.1
Available with Ubuntu Pro
linux-image-ibm-5.4 5.4.0.1103.108~18.04.1
Available with Ubuntu Pro
linux-image-lowlatency-5.4 5.4.0.228.248~18.04.1
Available with Ubuntu Pro
linux-image-lowlatency-hwe-18.04 5.4.0.228.248~18.04.1
Available with Ubuntu Pro
linux-image-oem 5.4.0.228.248~18.04.1
Available with Ubuntu Pro
linux-image-oem-osp1 5.4.0.228.248~18.04.1
Available with Ubuntu Pro
linux-image-oracle 5.4.0.1155.165~18.04.1
Available with Ubuntu Pro
linux-image-oracle-5.4 5.4.0.1155.165~18.04.1
Available with Ubuntu Pro
linux-image-snapdragon-5.4 5.4.0.228.248~18.04.1
Available with Ubuntu Pro
linux-image-snapdragon-hwe-18.04 5.4.0.228.248~18.04.1
Available with Ubuntu Pro
linux-image-virtual-5.4 5.4.0.228.248~18.04.1
Available with Ubuntu Pro
linux-image-virtual-hwe-18.04 5.4.0.228.248~18.04.1
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-8200-1
CVE-2022-49046, CVE-2024-46816, CVE-2025-37849, CVE-2026-23060,
CVE-2026-23074
