==========================================================================
Ubuntu Security Notice USN-7159-5
January 06, 2025

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:
  - ARM32 architecture;
  - ARM64 architecture;
  - S390 architecture;
  - x86 architecture;
  - Power management core;
  - GPU drivers;
  - InfiniBand drivers;
  - Network drivers;
  - S/390 drivers;
  - TTY drivers;
  - BTRFS file system;
  - EROFS file system;
  - F2FS file system;
  - File systems infrastructure;
  - BPF subsystem;
  - Socket messages infrastructure;
  - Bluetooth subsystem;
  - Ethernet bridge;
  - Networking core;
  - IPv4 networking;
  - SELinux security module;
(CVE-2022-48938, CVE-2024-42156, CVE-2024-36953, CVE-2024-38538,
CVE-2021-47501, CVE-2024-42068, CVE-2024-26947, CVE-2024-46724,
CVE-2024-36968, CVE-2023-52497, CVE-2024-35951, CVE-2023-52488,
CVE-2024-44940, CVE-2022-48733, CVE-2023-52498, CVE-2022-48943,
CVE-2024-35904, CVE-2024-42077, CVE-2024-36938, CVE-2023-52639,
CVE-2024-42240, CVE-2024-44942, CVE-2021-47076)

Update instructions:

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

Ubuntu 18.04 LTS
  linux-image-5.4.0-1120-raspi    5.4.0-1120.132~18.04.1
                                  Available with Ubuntu Pro
  linux-image-raspi-hwe-18.04     5.4.0.1120.132~18.04.1
                                  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-7159-5
  https://ubuntu.com/security/notices/USN-7159-4
  https://ubuntu.com/security/notices/USN-7159-3
  https://ubuntu.com/security/notices/USN-7159-2
  https://ubuntu.com/security/notices/USN-7159-1
  CVE-2021-47076, CVE-2021-47501, CVE-2022-48733, CVE-2022-48938,
  CVE-2022-48943, CVE-2023-52488, CVE-2023-52497, CVE-2023-52498,
  CVE-2023-52639, CVE-2024-26947, CVE-2024-35904, CVE-2024-35951,
  CVE-2024-36938, CVE-2024-36953, CVE-2024-36968, CVE-2024-38538,
  CVE-2024-42068, CVE-2024-42077, CVE-2024-42156, CVE-2024-42240,
  CVE-2024-44940, CVE-2024-44942, CVE-2024-46724