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[USN-7634-1] GNU C Library vulnerabilities

Posted on 14 July 2025
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7634-1
July 14, 2025

glibc vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04
- Ubuntu 24.04 LTS

Summary:

Several security issues were fixed in GNU C Library.

Software Description:
- glibc: GNU C Library

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)

Update instructions:

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

Ubuntu 25.04
libc6 2.41-6ubuntu1.1

Ubuntu 24.04 LTS
libc6 2.39-0ubuntu8.5

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

References:
https://ubuntu.com/security/notices/USN-7634-1
CVE-2025-5702, CVE-2025-5745

Package Information:
https://launchpad.net/ubuntu/+source/glibc/2.41-6ubuntu1.1
https://launchpad.net/ubuntu/+source/glibc/2.39-0ubuntu8.5

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