Libxpm: libxpm: denial of service via out-of-bounds read in xpm file parsing
CVE-2026-4367 is fixed in 8 products on 1 platform, first by libxpm4 1:3.5.12-1ubuntu0.22.04.3, released April 21, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libXpm · amzn 2023 | 3.5.17-3.amzn2023.0.2 | ALAS2023-2026-1656 | May 11, 2026 |
| libXpm · opensuse-leap 16.0 | 3.5.17-160000.3.1 | OPENSUSE-SU-2026:20953-1 | Jun 11, 2026 |
| libXpm · sles 16.0 | 3.5.17-160000.3.1 | SUSE-SU-2026:22121-1 | Jun 11, 2026 |
| libXpm-debuginfo · amzn 2023 | 3.5.17-3.amzn2023.0.2 | ALAS2023-2026-1656 | May 11, 2026 |
| libXpm-debugsource · amzn 2023 | 3.5.17-3.amzn2023.0.2 | ALAS2023-2026-1656 | May 11, 2026 |
| libXpm-devel · amzn 2023 | 3.5.17-3.amzn2023.0.2 | ALAS2023-2026-1656 | May 11, 2026 |
| libXpm-devel-debuginfo · amzn 2023 | 3.5.17-3.amzn2023.0.2 | ALAS2023-2026-1656 | May 11, 2026 |
| libxpm · Debian 13.5 (trixie) | 1:3.5.17-1+deb13u1 | DEBIAN-CVE-2026-4367 | May 15, 2026 |
| libxpm · Debian 14 | 1:3.5.19-1 | DEBIAN-CVE-2026-4367 | May 15, 2026 |
| libxpm4 · Ubuntu 22.04.1 LTS (jammy) | 1:3.5.12-1ubuntu0.22.04.3 | libxpm4 1:3.5.12-1ubuntu0.22.04.3 | Apr 21, 2026 |
| libxpm4 · Ubuntu 24.04.5 LTS (noble) | 1:3.5.17-1ubuntu0.24.04.1 | libxpm4 1:3.5.17-1ubuntu0.24.04.1 | Apr 21, 2026 |
| libxpm4 · Ubuntu 26.04.1 LTS (resolute) | 1:3.5.17-1ubuntu0.26.04.1 | libxpm4 1:3.5.17-1ubuntu0.26.04.1 | Apr 21, 2026 |
| xpmutils · Ubuntu 22.04.1 LTS (jammy) | 1:3.5.12-1ubuntu0.22.04.3 | xpmutils 1:3.5.12-1ubuntu0.22.04.3 | Apr 21, 2026 |
| xpmutils · Ubuntu 24.04.5 LTS (noble) | 1:3.5.17-1ubuntu0.24.04.1 | xpmutils 1:3.5.17-1ubuntu0.24.04.1 | Apr 21, 2026 |
| xpmutils · Ubuntu 26.04.1 LTS (resolute) | 1:3.5.17-1ubuntu0.26.04.1 | xpmutils 1:3.5.17-1ubuntu0.26.04.1 | Apr 21, 2026 |
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