vulnerability
Arch Linux: Denial of service (CVE-2025-31115)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Apr 3, 2025 | Jul 11, 2025 | Dec 17, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Apr 3, 2025
Added
Jul 11, 2025
Modified
Dec 17, 2025
Description
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 include heap use after free and writing to an address based on the null pointer plus an offset. Applications and libraries that use the lzma_stream_decoder_mt function are affected. The bug has been fixed in XZ Utils 5.8.1, and the fix has been committed to the v5.4, v5.6, v5.8, and master branches in the xz Git repository.
Solution
arch-linux-upgrade-latest
References
- CVE-2025-31115
- https://attackerkb.com/topics/CVE-2025-31115
- URL-https://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480
- URL-https://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2
- URL-https://tukaani.org/xz/threaded-decoder-early-free.html
- URL-https://tukaani.org/xz/xz-cve-2025-31115.patch
- CWE-366
- CWE-416
- CWE-476
- CWE-826
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