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Ubuntu 20.04 LTS: Linux Kernel Azure Critical Security Update USN-7810-2

ubuntu
Calendar Grey October 14, 2025
Dist Ubuntu Esm H88
Several issues fixed in Ubuntu's Linux kernel (Azure) enhance security; critical updates recommenced.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure-5.15: 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:

- Network drivers;

- Packet sockets;

- Network traffic control;

- VMware vSockets driver;

(CVE-2025-38617, CVE-2025-38618, CVE-2025-38477, CVE-2025-38683)

Topics%20covered

Topics Covered

security advisory critical update instructions system compromise network linux-azure

Update Instructions

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

Ubuntu 20.04 LTS
  linux-image-5.15.0-1097-azure   5.15.0-1097.106~20.04.1
                                  Available with Ubuntu Pro
  linux-image-azure               5.15.0.1097.106~20.04.1
                                  Available with Ubuntu Pro
  linux-image-azure-5.15          5.15.0.1097.106~20.04.1
                                  Available with Ubuntu Pro
  linux-image-azure-cvm           5.15.0.1097.106~20.04.1
                                  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-7810-2

https://ubuntu.com/security/notices/USN-7810-1

CVE-2025-38477, CVE-2025-38617, CVE-2025-38618, CVE-2025-38683

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7810-2

Topics%20covered

Topics Covered

security advisory critical update instructions system compromise network linux-azure

Package Information

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