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Ubuntu 24.04: USN-7808-1 Critical Kernel Issues for Azure Systems

ubuntu
Calendar Grey October 8, 2025
Dist Ubuntu Esm H88
Multiple security flaws were resolved in the Ubuntu Azure kernel in a critical update, addressing major security concerns.
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

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;

- Ext4 file system;

- SMB network file system;

- Packet sockets;

- Network traffic control;

- TLS protocol;

- VMware vSockets driver;

- XFRM subsystem;

(CVE-2025-38617, CVE-2025-37785, CVE-2025-38244, CVE-2025-37756,

CVE-2025-38618, CVE-2025-38477, CVE-2025-38683, CVE-2025-38500)

Topics%20covered

Topics Covered

security advisory critical Ubuntu kernel attack linux-azure

Update Instructions

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

Ubuntu 24.04 LTS
  linux-image-6.8.0-1040-azure    6.8.0-1040.46
  linux-image-6.8.0-1040-azure-fde  6.8.0-1040.46
  linux-image-azure-6.8           6.8.0-1040.46
  linux-image-azure-fde-6.8       6.8.0-1040.46
  linux-image-azure-fde-lts-24.04  6.8.0-1040.46
  linux-image-azure-lts-24.04     6.8.0-1040.46

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-7808-1

CVE-2025-37756, CVE-2025-37785, CVE-2025-38244, CVE-2025-38477,

CVE-2025-38500, CVE-2025-38617, CVE-2025-38618, CVE-2025-38683

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7808-1

Topics%20covered

Topics Covered

security advisory critical Ubuntu kernel attack linux-azure

Package Information

https://launchpad.net/ubuntu/+source/linux-azure/6.8.0-1040.46

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