Use After Free in Tukaani-project Xz
CVE-2025-31115
XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder in liblzma has a bug where invalid input can at least result in a crash. The effects includ…
EPSS: 0.006 (47.0th percentile) — read the EPSS interpretation.
Affected products
- Tukaani-project Xz — versions >= 5.3.3alpha, < 5.8.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- https://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2 (x_refsource_CONFIRM)
- https://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480 (x_refsource_MISC)
- https://tukaani.org/xz/xz-cve-2025-31115.patch (x_refsource_MISC)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2025-31115?
- CVE-2025-31115 is a vulnerability in Tukaani-project Xz, classified under Race Condition within a Thread. Published 2025-04-03.
- Is CVE-2025-31115 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.