| Name | CVE-2021-40633 |
| Description | A memory leak (out-of-memory) in gif2rgb in util/gif2rgb.c in giflib 5.1.4 allows remote attackers trigger an out of memory exception or denial of service via a gif format file. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1014586 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| giflib (PTS) | jessie, jessie (lts) | 4.1.6-11+deb8u2 | vulnerable |
| stretch (lts), stretch | 5.1.4-0.4+deb9u1 | vulnerable |
| buster (security), buster, buster (lts) | 5.1.4-3+deb10u1 | vulnerable |
| bullseye | 5.1.9-2 | vulnerable |
| bookworm | 5.2.1-2.5 | vulnerable |
| sid, trixie | 5.2.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| giflib | source | (unstable) | 5.2.2-1 | unimportant | | 1014586 |
Notes
https://sourceforge.net/p/giflib/bugs/157/
Specific to gif2rgb. Crash in CLI tool, no security impact