Race Condition The advisory has been revoked - it doesn't affect any version of package xz (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALMALINUX10-XZ-10289542
- published1 Jun 2025
- disclosed13 May 2025
Introduced: 13 May 2025
CVE-2025-31115 (opens in a new tab)Amendment
The AlmaLinux security team deemed this advisory irrelevant for AlmaLinux:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xz package and not the xz package as distributed by AlmaLinux.
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 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. No new release packages will be made from the old stable branches, but a standalone patch is available that applies to all affected releases.
References
- https://errata.almalinux.org/10/ALSA-2025-7524.html
- https://access.redhat.com/security/cve/CVE-2025-31115
- https://access.redhat.com/errata/RHSA-2025:7524
- https://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480
- https://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2
- https://tukaani.org/xz/xz-cve-2025-31115.patch
- http://www.openwall.com/lists/oss-security/2025/04/03/1
- http://www.openwall.com/lists/oss-security/2025/04/03/2
- http://www.openwall.com/lists/oss-security/2025/04/03/3
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html