CVE catalog
CVE-2026-32829
DEBIAN-CVE-2026-32829
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.62% · Oct 25, 2026
lz4_flex is a pure Rust implementation of LZ4 compression/decompression. In versions 0.11.5 and below, and 0.12.0, decompressing invalid LZ4 data can leak sensitive information from uninitialized memory or from previous decompression operations. The library fails to properly validate offset values during LZ4 "match copy operations," allowing out-of-bounds reads from the output buffer. The block-based API functions (`decompress_into`, `decompress_into_with_dict`, and others when `safe-decode` is disabled) are affected, while all frame APIs are unaffected. The impact is potential exposure of sensitive data and secrets through crafted or malformed LZ4 input. This issue has been fixed in versions 0.11.6 and 0.12.1.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | rust-lz4-flex | 13 | 0.11.3-1 | vulnerable |
| Debian | rust-lz4-flex | 13 | 0.11.3-2 | vulnerable |
| Debian | rust-lz4-flex | 13 | 0.13.0-1 | vulnerable |
| Debian | rust-lz4-flex | 14 | 0.11.3-1 | vulnerable |
| Debian | rust-lz4-flex | 14 | 0.11.3-2 | vulnerable |
| Debian | rust-lz4-flex | 14 | 0.13.0-1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rust-lz4-flex | deb | 14 | 0.13.0-1 | Not reported | DEBIAN-CVE-2026-32829 | Not reported |
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [librust-lz4-flex-dev]Affected
Source package: [rust-lz4-flex]
Details (2)
0.11.3-1· amd64 · trixieAffected
pypi · rust-lz4-flex · debian · 13
0.11.3-1· arm64 · trixieAffected
pypi · rust-lz4-flex · debian · 13
Observed: