USN-8226-1: kmod update

Publication date

30 April 2026

Overview

kmod has been updated to block loading of the algif_aead kernel module.


Packages

  • kmod - tools for managing Linux kernel modules

Details

It was discovered that the Linux kernel algif_aead module contained a logic
flaw allowing a local attacker to escalate privileges to root. This update
to the kmod package disables loading the algif_aead module as a measure to
mitigate the issue until kernel updates are made available.

See the following URL for more information
https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available

It was discovered that the Linux kernel algif_aead module contained a logic
flaw allowing a local attacker to escalate privileges to root. This update
to the kmod package disables loading the algif_aead module as a measure to
mitigate the issue until kernel updates are made available.

See the following URL for more information
https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
25.10 questing kmod –  34.2-2ubuntu1.1
24.04 LTS noble kmod –  31+20240202-2ubuntu7.2
22.04 LTS jammy kmod –  29-1ubuntu1.1

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