USN-7634-1: GNU C Library vulnerabilities

Publication date

14 July 2025

Overview

Several security issues were fixed in GNU C Library.


Packages

Details

It was discovered that the GNU C Library incorrectly handled the strcmp
implementation optimized for Power10 processors. This could cause
applications to crash, compute wrong results, or leak confidential
information. (CVE-2025-5702)

It was discovered that the GNU C Library incorrectly handled the strncmp
implementation optimized for Power10 processors. This could cause
applications to crash, compute wrong results, or leak confidential
information. This issue only affected Ubuntu 25.04. (CVE-2025-5745)

It was discovered that the GNU C Library incorrectly handled the strcmp
implementation optimized for Power10 processors. This could cause
applications to crash, compute wrong results, or leak confidential
information. (CVE-2025-5702)

It was discovered that the GNU C Library incorrectly handled the strncmp
implementation optimized for Power10 processors. This could cause
applications to crash, compute wrong results, or leak confidential
information. This issue only affected Ubuntu 25.04. (CVE-2025-5745)

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
25.04 plucky libc6 –  2.41-6ubuntu1.1
24.04 noble libc6 –  2.39-0ubuntu8.5

Reduce your security exposure

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