==========================================================================
Ubuntu Security Notice USN-7173-3
January 15, 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:

Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)

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;
  - Network drivers;
  - SCSI subsystem;
  - Ext4 file system;
  - Bluetooth subsystem;
  - Memory management;
  - Amateur Radio drivers;
  - Network traffic control;
  - Sun RPC protocol;
  - VMware vSockets driver;
(CVE-2023-52821, CVE-2024-40910, CVE-2024-43892, CVE-2024-49967,
CVE-2024-50264, CVE-2024-36952, CVE-2024-38553, CVE-2021-47101,
CVE-2021-47001, CVE-2024-35965, CVE-2024-35963, CVE-2024-35966,
CVE-2024-35967, CVE-2024-53057, CVE-2024-38597)

Update instructions:

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

Ubuntu 18.04 LTS
  linux-image-5.4.0-1121-raspi    5.4.0-1121.133~18.04.1
                                  Available with Ubuntu Pro
  linux-image-raspi-hwe-18.04     5.4.0.1121.133~18.04.1
                                  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-7173-3
  https://ubuntu.com/security/notices/USN-7173-2
  https://ubuntu.com/security/notices/USN-7173-1
  CVE-2021-47001, CVE-2021-47101, CVE-2022-38096, CVE-2023-52821,
  CVE-2024-35963, CVE-2024-35965, CVE-2024-35966, CVE-2024-35967,
  CVE-2024-36952, CVE-2024-38553, CVE-2024-38597, CVE-2024-40910,
  CVE-2024-43892, CVE-2024-49967, CVE-2024-50264, CVE-2024-53057