USN-7760-1: GNU C Library vulnerability

Publication date

22 September 2025

Overview

GNU C Library could be made to crash or run programs if it received specially crafted input.


Packages

Details

It was discovered that the GNU C Library incorrectly handled the regcomp
function when memory allocation failures occured. An attacker could use
this issue to cause applications to crash, leading to a denial of service,
or possibly execute arbitrary code.

It was discovered that the GNU C Library incorrectly handled the regcomp
function when memory allocation failures occured. An attacker could use
this issue to cause applications to crash, leading to a denial of service,
or possibly execute arbitrary code.

Update instructions

In general, a standard system update will 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
25.04 plucky libc6 –  2.41-6ubuntu1.2
24.04 noble libc6 –  2.39-0ubuntu8.6
22.04 jammy libc6 –  2.35-0ubuntu3.11

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