# CVE-2026-42144: cimg: CImg Library is a C++ library for image processing

CVE-2026-42144 is fixed in 13 products on 1 platform, first by DEBIAN-CVE-2026-42144, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-42144
- Priority: Routine
- CVSS: 6.1 (medium)
- EPSS: 0.0014
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 4, 2026

## Description

CImg Library is a C++ library for image processing. Prior to commit 4ca26bc, there is an integer overflow vulnerability in the W*H*D size computation inside _load_pnm() that can bypass the memory allocation guard. A crafted PNM/PGM/PPM file with large dimension values causes the overflow to wrap around, allocating an undersized buffer and potentially triggering a heap buffer overflow. Any application using CImg to load untrusted image files is affected. This issue has been patched via commit 4ca26bc.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | CImg Fedora 43 | 1:3.7.6-2.fc43 | [FEDORA-2026-86596F9CBC](https://patchblox.com/security/data/fix/linux/fedora-2026-86596f9cbc.md) | May 20, 2026 |
| Linux | CImg-devel Fedora 43 | 1:3.7.6-2.fc43 | [FEDORA-2026-86596F9CBC](https://patchblox.com/security/data/fix/linux/fedora-2026-86596f9cbc.md) | May 20, 2026 |
| Linux | cimg Debian 13.5 (trixie) | 3.5.2+dfsg-1+deb13u1 | [DEBIAN-CVE-2026-42144](https://patchblox.com/security/data/fix/linux/debian-cve-2026-42144.md) | May 15, 2026 |
| Linux | cimg Debian 14 | 3.5.2+dfsg-2 | [DEBIAN-CVE-2026-42144](https://patchblox.com/security/data/fix/linux/debian-cve-2026-42144.md) | May 15, 2026 |
| Linux | gmic Fedora 43 | 3.7.6-3.fc43 | [FEDORA-2026-86596F9CBC](https://patchblox.com/security/data/fix/linux/fedora-2026-86596f9cbc.md) | May 20, 2026 |
| Linux | gmic-debuginfo Fedora 43 | 3.7.6-3.fc43 | [FEDORA-2026-86596F9CBC](https://patchblox.com/security/data/fix/linux/fedora-2026-86596f9cbc.md) | May 20, 2026 |
| Linux | gmic-debugsource Fedora 43 | 3.7.6-3.fc43 | [FEDORA-2026-86596F9CBC](https://patchblox.com/security/data/fix/linux/fedora-2026-86596f9cbc.md) | May 20, 2026 |
| Linux | gmic-devel Fedora 43 | 3.7.6-3.fc43 | [FEDORA-2026-86596F9CBC](https://patchblox.com/security/data/fix/linux/fedora-2026-86596f9cbc.md) | May 20, 2026 |
| Linux | gmic-gimp Fedora 43 | 3.7.6-3.fc43 | [FEDORA-2026-86596F9CBC](https://patchblox.com/security/data/fix/linux/fedora-2026-86596f9cbc.md) | May 20, 2026 |
| Linux | gmic-libs Fedora 43 | 3.7.6-3.fc43 | [FEDORA-2026-86596F9CBC](https://patchblox.com/security/data/fix/linux/fedora-2026-86596f9cbc.md) | May 20, 2026 |
| Linux | gmic-libs-debuginfo Fedora 43 | 3.7.6-3.fc43 | [FEDORA-2026-86596F9CBC](https://patchblox.com/security/data/fix/linux/fedora-2026-86596f9cbc.md) | May 20, 2026 |
| Linux | krita Fedora 43 | 5.2.16-2.fc43 | [FEDORA-2026-45B342F7C1](https://patchblox.com/security/data/fix/linux/fedora-2026-45b342f7c1.md) | Jun 19, 2026 |
| Linux | krita-debuginfo Fedora 43 | 5.2.16-2.fc43 | [FEDORA-2026-45B342F7C1](https://patchblox.com/security/data/fix/linux/fedora-2026-45b342f7c1.md) | Jun 19, 2026 |
| Linux | krita-debugsource Fedora 43 | 5.2.16-2.fc43 | [FEDORA-2026-45B342F7C1](https://patchblox.com/security/data/fix/linux/fedora-2026-45b342f7c1.md) | Jun 19, 2026 |

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Data as of 2026-11-09T07:25:28Z 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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