USN-7414-1: XZ Utils vulnerability

Releases

• Ubuntu 24.10
• Ubuntu 24.04 LTS

Packages

• 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

• xz-utils - 5.6.1+really5.4.5-1ubuntu0.2

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

References

• CVE-2025-31115