CVE-2026-42144

Name	CVE-2026-42144
Description	CImg Library is a C++ library for image processing. Prior to commit 4ca26bc, there is an integer overflow vulnerability in the WHD 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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
cimg (PTS)	bullseye	2.9.4+dfsg-2	vulnerable
	bookworm	3.2.1+dfsg-1	vulnerable
	forky, sid, trixie	3.5.2+dfsg-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
cimg	source	(unstable)	(unfixed)

Notes

https://github.com/GreycLab/CImg/security/advisories/GHSA-4663-63fm-44gc
https://github.com/GreycLab/CImg/issues/478
Fixed by: https://github.com/GreycLab/CImg/commit/4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d (v3.7.5)