Medium severity5.3NVD Advisory· Published Apr 2, 2026· Updated Apr 15, 2026
CVE-2026-34743
CVE-2026-34743
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Range: <5.8.3
Patches
Vulnerability mechanics
References
4- www.openwall.com/lists/oss-security/2026/03/31/13nvdMailing ListPatchThird Party Advisory
- github.com/tukaani-project/xz/commit/c8c22869e780ff57c96b46939c3d79ff99395f87nvdPatch
- github.com/tukaani-project/xz/security/advisories/GHSA-x872-m794-cxhvnvdVendor Advisory
- github.com/tukaani-project/xz/releases/tag/v5.8.3nvdProductRelease Notes
News mentions
0No linked articles in our index yet.