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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
CVE-2026-4367 NameCVE-2026-4367 SourceCVE (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 Bugs1134690 Vulnerable and fixed packages The table below lists information on source packages. Source PackageReleaseVersionStatus libxpm (PTS)bullseye (security),…
CVE-2026-4367
| Name | CVE-2026-4367 |
| 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 |
Vulnerable and fixed packages
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 |
Notes
[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
Apply commands
[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/2026/04/21/3https://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/5448e1bd7252780b16db869c2253d24e0fe0ae18 (libXpm-3.5.19)https://gitlab.freedesktop.org/xorg/lib/libxpm/-/merge_requests/31OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 1:3.5.19-1 |
| forky | Fixed | 1:3.5.19-1 |
| bullseye | Affected | — |
| bookworm | Affected | — |
References
- https://security-tracker.debian.org/tracker/CVE-2026-4367
- https://www.suse.com/security/cve/CVE-2026-4367.html
- https://access.redhat.com/security/cve/CVE-2026-4367
- https://bugzilla.redhat.com/show_bug.cgi?id=2448984
- https://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/5448e1bd
- https://seclists.org/oss-sec/2026/q2/192
- http://www.openwall.com/lists/oss-security/2026/04/21/3
CWEs
CWE-125
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.