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Ubuntu 24.10, 24.04 LTS: USN-7499-1 critical: Linux kernel security fix

ubuntu
Calendar Grey May 7, 2025
Dist Ubuntu Esm H88
Multiple vulnerabilities addressed in the Ubuntu Linux kernel specifically for Azure infrastructure; essential patches implemented.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-azure-6.11: Linux kernel for Microsoft Azure cloud 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:

- Microsoft Azure Network Adapter (MANA) driver;

- Timer subsystem;

(CVE-2025-21813, CVE-2025-21953)

Topics%20covered

Topics Covered

security advisory update ubuntu system compromise linux kernel azure

Update Instructions

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

Ubuntu 24.10
  linux-image-6.11.0-1014-azure   6.11.0-1014.14
  linux-image-6.11.0-1014-azure-fde  6.11.0-1014.14
  linux-image-azure               6.11.0-1014.14
  linux-image-azure-fde           6.11.0-1014.14

Ubuntu 24.04 LTS
  linux-image-6.11.0-1014-azure   6.11.0-1014.14~24.04.1
  linux-image-6.11.0-1014-azure-fde  6.11.0-1014.14~24.04.1
  linux-image-azure               6.11.0-1014.14~24.04.1
  linux-image-azure-fde           6.11.0-1014.14~24.04.1

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-7499-1

CVE-2025-21813, CVE-2025-21953

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7499-1

Topics%20covered

Topics Covered

security advisory update ubuntu system compromise linux kernel azure

Package Information

https://launchpad.net/ubuntu/+source/linux-azure/6.11.0-1014.14
https://launchpad.net/ubuntu/+source/linux-azure-6.11/6.11.0-1014.14~24.04.1

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