| Name | CVE-2026-4367 |
| Description | A flaw was found in libXpm. A local user with low privileges could exploit an Out-of-Bounds Read vulnerability in the `xpmNextWord()` function by processing a specially crafted or very small XPM (X PixMap) image file. This improper validation of file boundaries can cause an internal pointer to read beyond the file's end, leading to application crashes and Denial of Service conditions. |
| 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) |
| Debian Bugs | 1134690 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libxpm (PTS) | bullseye (security), bullseye | 1:3.5.12-1.1+deb11u1 | vulnerable |
| bookworm, bookworm (security) | 1:3.5.12-1.1+deb12u1 | vulnerable | |
| trixie | 1:3.5.17-1 | vulnerable | |
| forky, sid | 1:3.5.19-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libxpm | source | (unstable) | 1:3.5.19-1 | 1134690 |
[trixie] - libxpm <no-dsa> (Minor issue)
[bookworm] - libxpm <no-dsa> (Minor issue)
[bullseye] - libxpm <postponed> (Minor issue; can be fixed in next update)
https://www.openwall.com/lists/oss-security/2026/04/21/3
https://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/5448e1bd7252780b16db869c2253d24e0fe0ae18 (libXpm-3.5.19)
https://gitlab.freedesktop.org/xorg/lib/libxpm/-/merge_requests/31