gimp: A heap-buffer-overflow vulnerability exists in the APNG (Animated PNG) file loader of GIMP
CVE-2026-42169 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-42169, released August 4, 2026. It is not reported as exploited. Patch Radar priority: High.
A heap-buffer-overflow vulnerability exists in the APNG (Animated PNG) file loader of GIMP. This flaw occurs when the `fcTL` width exceeds the `IHDR` width, leading to pixel data being written past the end of a heap allocation. Additionally, a heap-based buffer overflow exists in the DDS plug-in due to a BPP mismatch in the `load_layer()` function. Both vulnerabilities can be triggered by opening a specially crafted image file, potentially leading to code execution.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gimp · Debian 14 | 3.2.4-1 | DEBIAN-CVE-2026-42169 | Aug 4, 2026 |
| gimp · RHEL 9 | 2:3.0.4-4.el9_8.9 | RHSA-2026:50817 | Aug 6, 2026 |
| gimp · almalinux 9 | 2:3.0.4-4.el9_8.9 | ALSA-2026:50817 | Aug 5, 2026 |
| gimp · ol 9 | 2:3.0.4-4.el9_8.9 | ELSA-2026-50817 | Aug 5, 2026 |
| gimp-libs · RHEL 9 | 2:3.0.4-4.el9_8.9 | RHSA-2026:50817 | Aug 6, 2026 |
| gimp-libs · almalinux 9 | 2:3.0.4-4.el9_8.9 | ALSA-2026:50817 | Aug 5, 2026 |
| gimp-libs · ol 9 | 2:3.0.4-4.el9_8.9 | ELSA-2026-50817 | Aug 5, 2026 |
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