CVE-2026-34743

N/A

Description

XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.

CVE Details

CVSS v3.1 ScoreN/A

Published4/2/2026

Last Modified4/3/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-122

References

https://github.com/tukaani-project/xz/commit/c8c22869e780ff57c96b46939c3d79ff99395f87(security-advisories@github.com)

https://github.com/tukaani-project/xz/releases/tag/v5.8.3(security-advisories@github.com)

https://github.com/tukaani-project/xz/security/advisories/GHSA-x872-m794-cxhv(security-advisories@github.com)

http://www.openwall.com/lists/oss-security/2026/03/31/13(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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