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[USN-8692-1] GNU diffutils vulnerability

Posted on 31 August 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8692-1
August 31, 2026

diffutils vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

GNU diffutils could be made to crash if it received specially crafted
input.

Software Description:
- diffutils: File comparison utilities

Details:

It was discovered that GNU diffutils incorrectly handled certain integer
arithmetic when mapping line ranges in diff3. A local attacker could
possibly use this issue to cause diff3 to crash, resulting in a denial of
service.

Update instructions:

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

Ubuntu 26.04 LTS
diffutils 1:3.12-1ubuntu0.1

Ubuntu 24.04 LTS
diffutils 1:3.10-1ubuntu0.1

Ubuntu 22.04 LTS
diffutils 1:3.8-0ubuntu2.1

Ubuntu 20.04 LTS
diffutils 1:3.7-3ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
diffutils 1:3.6-1ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
diffutils 1:3.3-3ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 14.04 LTS
diffutils 1:3.3-1ubuntu0.1~esm1
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8692-1
CVE-2026-53910

Package Information:
https://launchpad.net/ubuntu/+source/diffutils/1:3.12-1ubuntu0.1
https://launchpad.net/ubuntu/+source/diffutils/1:3.10-1ubuntu0.1
https://launchpad.net/ubuntu/+source/diffutils/1:3.8-0ubuntu2.1

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