==========================================================================
Ubuntu Security Notice USN-7553-1
June 04, 2025

linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gcp-4.15, linux-hwe,
linux-kvm, linux-oracle vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 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-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe: Linux hardware enablement (HWE) kernel

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:
  - Clock framework and drivers;
  - GPU drivers;
  - Parport drivers;
  - Ext4 file system;
  - JFFS2 file system;
  - JFS file system;
  - File systems infrastructure;
  - Sun RPC protocol;
  - USB sound devices;
(CVE-2024-42301, CVE-2024-53168, CVE-2024-47701, CVE-2021-47211,
CVE-2024-53155, CVE-2024-56596, CVE-2024-26966, CVE-2024-56551,
CVE-2024-57850)

Update instructions:

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

Ubuntu 18.04 LTS
  linux-image-4.15.0-1143-oracle  4.15.0-1143.154
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1164-kvm     4.15.0-1164.169
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1174-gcp     4.15.0-1174.191
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1181-aws     4.15.0-1181.194
                                  Available with Ubuntu Pro
  linux-image-4.15.0-238-generic  4.15.0-238.250
                                  Available with Ubuntu Pro
  linux-image-4.15.0-238-lowlatency  4.15.0-238.250
                                  Available with Ubuntu Pro
  linux-image-aws-lts-18.04       4.15.0.1181.179
                                  Available with Ubuntu Pro
  linux-image-gcp-lts-18.04       4.15.0.1174.187
                                  Available with Ubuntu Pro
  linux-image-generic             4.15.0.238.222
                                  Available with Ubuntu Pro
  linux-image-kvm                 4.15.0.1164.155
                                  Available with Ubuntu Pro
  linux-image-lowlatency          4.15.0.238.222
                                  Available with Ubuntu Pro
  linux-image-oracle-lts-18.04    4.15.0.1143.148
                                  Available with Ubuntu Pro
  linux-image-virtual             4.15.0.238.222
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  linux-image-4.15.0-1143-oracle  4.15.0-1143.154~16.04.1
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1174-gcp     4.15.0-1174.191~16.04.1
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1181-aws     4.15.0-1181.194~16.04.1
                                  Available with Ubuntu Pro
  linux-image-4.15.0-238-generic  4.15.0-238.250~16.04.1
                                  Available with Ubuntu Pro
  linux-image-4.15.0-238-lowlatency  4.15.0-238.250~16.04.1
                                  Available with Ubuntu Pro
  linux-image-aws-hwe             4.15.0.1181.194~16.04.1
                                  Available with Ubuntu Pro
  linux-image-gcp                 4.15.0.1174.191~16.04.1
                                  Available with Ubuntu Pro
  linux-image-generic-hwe-16.04   4.15.0.238.250~16.04.1
                                  Available with Ubuntu Pro
  linux-image-gke                 4.15.0.1174.191~16.04.1
                                  Available with Ubuntu Pro
  linux-image-lowlatency-hwe-16.04  4.15.0.238.250~16.04.1
                                  Available with Ubuntu Pro
  linux-image-oem                 4.15.0.238.250~16.04.1
                                  Available with Ubuntu Pro
  linux-image-oracle              4.15.0.1143.154~16.04.1
                                  Available with Ubuntu Pro
  linux-image-virtual-hwe-16.04   4.15.0.238.250~16.04.1
                                  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-7553-1
  CVE-2021-47211, CVE-2024-26966, CVE-2024-42301, CVE-2024-47701,
  CVE-2024-53155, CVE-2024-53168, CVE-2024-56551, CVE-2024-56596,
  CVE-2024-57850