cimg: CImg Library is a C++ library for image processing
CVE-2026-42146 is fixed in 10 products on 1 platform, first by DEBIAN-CVE-2026-42146, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.
CImg Library is a C++ library for image processing. Prior to commit c3aacf5, the nb_colors field read from the BMP file header is used directly to compute an allocation size without validating it against the remaining file size. A crafted BMP file with a large nb_colors value triggers an out-of-memory condition, crashing any application that uses CImg to load untrusted BMP files. This issue has been patched via commit c3aacf5.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| CImg · Fedora 43 | 1:3.7.6-2.fc43 | FEDORA-2026-86596F9CBC | May 20, 2026 |
| CImg-devel · Fedora 43 | 1:3.7.6-2.fc43 | FEDORA-2026-86596F9CBC | May 20, 2026 |
| cimg · Debian 13.5 (trixie) | 3.5.2+dfsg-1+deb13u1 | DEBIAN-CVE-2026-42146 | May 15, 2026 |
| cimg · Debian 14 | 3.5.2+dfsg-2 | DEBIAN-CVE-2026-42146 | May 15, 2026 |
| gmic · Fedora 43 | 3.7.6-3.fc43 | FEDORA-2026-86596F9CBC | May 20, 2026 |
| gmic-debuginfo · Fedora 43 | 3.7.6-3.fc43 | FEDORA-2026-86596F9CBC | May 20, 2026 |
| gmic-debugsource · Fedora 43 | 3.7.6-3.fc43 | FEDORA-2026-86596F9CBC | May 20, 2026 |
| gmic-devel · Fedora 43 | 3.7.6-3.fc43 | FEDORA-2026-86596F9CBC | May 20, 2026 |
| gmic-gimp · Fedora 43 | 3.7.6-3.fc43 | FEDORA-2026-86596F9CBC | May 20, 2026 |
| gmic-libs · Fedora 43 | 3.7.6-3.fc43 | FEDORA-2026-86596F9CBC | May 20, 2026 |
| gmic-libs-debuginfo · Fedora 43 | 3.7.6-3.fc43 | FEDORA-2026-86596F9CBC | May 20, 2026 |
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