| Name | CVE-2026-33636 |
| Description | Out-of-bounds read/write in the palette expansion on ARM Neon |
| 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 |
|---|
| libpng1.6 (PTS) | bullseye | 1.6.37-3 | vulnerable |
| bullseye (security) | 1.6.37-3+deb11u2 | vulnerable |
| bookworm | 1.6.39-2+deb12u1 | vulnerable |
| bookworm (security) | 1.6.39-2+deb12u3 | vulnerable |
| trixie (security), trixie | 1.6.48-1+deb13u3 | vulnerable |
| forky, sid | 1.6.55-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libpng1.6 | source | (unstable) | (unfixed) | | | |
Notes
https://github.com/pnggroup/libpng/security/advisories/GHSA-wjr5-c57x-95m2
Introduced with: https://github.com/pnggroup/libpng/commit/7734cda20cf1236aef60f3bbd2267c97bbb40869 (v1.6.36)
Fixed by: https://github.com/pnggroup/libpng/commit/aba9f18eba870d14fb52c5ba5d73451349e339c3 (v1.6.56)