[USN-7414-1] XZ Utils vulnerability

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-7414-1
April 03, 2025

xz-utils vulnerability
==========================================================================

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

- Ubuntu 24.10
- Ubuntu 24.04 LTS

Summary:

XZ Utils could be made to crash or run programs if it opened a specially
crafted file.

Software Description:
- xz-utils: XZ-format compression utilities

Details:

Harri K. Koskinen discovered that XZ Utils incorrectly handled the threaded
xz decoder. If a user or automated system were tricked into processing an
xz file, a remote attacker could use this issue to cause XZ Utils to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 24.10
   xz-utils                        5.6.2-2ubuntu0.2

Ubuntu 24.04 LTS
   xz-utils                        5.6.1+really5.4.5-1ubuntu0.2

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

References:
   https://ubuntu.com/security/notices/USN-7414-1
   CVE-2025-31115

Package Information:
   https://launchpad.net/ubuntu/+source/xz-utils/5.6.2-2ubuntu0.2
   https://launchpad.net/ubuntu/+source/xz-utils/5.6.1+really5.4.5-1ubuntu0.2

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