==========================================================================
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