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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-31115 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
CVSS-B 8.7 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.openwall.com/lists/oss-security/2025/04/03/1 CVE
http://www.openwall.com/lists/oss-security/2025/04/03/2 CVE
http://www.openwall.com/lists/oss-security/2025/04/03/3 CVE
https://cert-portal.siemens.com/productcert/html/ssa-082556.html siemens-SADP
https://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480 GitHub, Inc.
https://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2 GitHub, Inc.
https://tukaani.org/xz/xz-cve-2025-31115.patch GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-366 Race Condition within a Thread GitHub, Inc.  
CWE-416 Use After Free GitHub, Inc.  
CWE-476 NULL Pointer Dereference GitHub, Inc.  
CWE-826 Premature Release of Resource During Expected Lifetime GitHub, Inc.  

Change History

7 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-31115
NVD Published Date:
04/03/2025
NVD Last Modified:
06/17/2026
Source:
GitHub, Inc.