| Name | CVE-2026-34743 |
| Description | liblzma: Fix a buffer overflow in lzma_index_append() |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| xz-utils (PTS) | bullseye (security), bullseye | 5.2.5-2.1~deb11u1 | vulnerable |
| bookworm, bookworm (security) | 5.4.1-1 | vulnerable |
| trixie | 5.8.1-1 | vulnerable |
| forky, sid | 5.8.2-2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| xz-utils | source | (unstable) | (unfixed) | | | |
Notes
[trixie] - xz-utils <no-dsa> (Minor issue)
[bookworm] - xz-utils <no-dsa> (Minor issue)
https://tukaani.org/xz/index-append-overflow.html
Fixed by: https://github.com/tukaani-project/xz/commit/c8c22869e780ff57c96b46939c3d79ff99395f87 (v5.8.3)