==========================================================================
Ubuntu Security Notice USN-7022-3
October 10, 2024

linux-raspi-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-raspi-5.4: Linux kernel for Raspberry Pi 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;
  - Modular ISDN driver;
  - MMC subsystem;
  - SCSI drivers;
  - F2FS file system;
  - GFS2 file system;
  - Netfilter;
  - RxRPC session sockets;
  - Integrity Measurement Architecture(IMA) framework;
(CVE-2021-47188, CVE-2024-39494, CVE-2022-48791, CVE-2022-48863,
CVE-2024-42228, CVE-2024-38570, CVE-2024-42160, CVE-2024-26787,
CVE-2024-27012, CVE-2024-26677)

Update instructions:

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

Ubuntu 18.04 LTS
  linux-image-5.4.0-1117-raspi    5.4.0-1117.129~18.04.1
                                  Available with Ubuntu Pro
  linux-image-raspi-hwe-18.04     5.4.0.1117.129~18.04.1
                                  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-7022-3
  https://ubuntu.com/security/notices/USN-7022-2
  https://ubuntu.com/security/notices/USN-7022-1
  CVE-2021-47188, CVE-2022-48791, CVE-2022-48863, CVE-2024-26677,
  CVE-2024-26787, CVE-2024-27012, CVE-2024-38570, CVE-2024-39494,
  CVE-2024-42160, CVE-2024-42228