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Ubuntu Security Notice USN-7402-2
April 01, 2025

linux-realtime vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-realtime: Linux kernel for Real-time 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:
  - Block layer subsystem;
  - GPU drivers;
  - HID subsystem;
  - Media drivers;
  - JFS file system;
  - Network namespace;
  - Networking core;
  - Netlink;
(CVE-2024-57798, CVE-2024-53140, CVE-2024-56595, CVE-2024-56598,
CVE-2024-50302, CVE-2024-56658, CVE-2024-56672, CVE-2024-53063)

Update instructions:

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

Ubuntu 24.04 LTS
  linux-image-6.8.1-1019-realtime  6.8.1-1019.20
                                  Available with Ubuntu Pro
  linux-image-realtime            6.8.1-1019.20
                                  Available with Ubuntu Pro
  linux-image-realtime-hwe-24.04  6.8.1-1019.20
                                  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-7402-2
  https://ubuntu.com/security/notices/USN-7402-1
  CVE-2024-50302, CVE-2024-53063, CVE-2024-53140, CVE-2024-56595,
  CVE-2024-56598, CVE-2024-56658, CVE-2024-56672, CVE-2024-57798