# CVE-2026-42170: gimp: A heap-based buffer overflow vulnerability exists in the GIMP DDS (DirectDraw Surface) file parser

CVE-2026-42170 is fixed in gimp on 1 platform, first by DEBIAN-CVE-2026-42170, released August 5, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-42170
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 8, 2026

## Description

A heap-based buffer overflow vulnerability exists in the GIMP DDS (DirectDraw Surface) file parser. When a crafted DDS file declares a D3D9 pixel format but sets a lower bits-per-pixel (bpp) value in the header, the loader allocates an undersized heap buffer. Subsequent pixel data consumption at the real format's stride causes a write past the heap buffer boundary, leading to heap metadata corruption and potential code execution.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gimp Debian 13.5 (trixie) | 3.0.4-3+deb13u10 | [DEBIAN-CVE-2026-42170](https://patchblox.com/security/data/fix/linux/debian-cve-2026-42170.md) | Aug 5, 2026 |
| Linux | gimp Debian 14 | 3.2.4-1 | [DEBIAN-CVE-2026-42170](https://patchblox.com/security/data/fix/linux/debian-cve-2026-42170.md) | Aug 5, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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