CVE-2026-25794

Name	CVE-2026-25794
Description	ImageMagick is free and open-source software used for editing and manipulating digital images. `WriteUHDRImage` in `coders/uhdr.c` uses `int` arithmetic to compute the pixel buffer size. Prior to version 7.1.2-15, when image dimensions are large, the multiplication overflows 32-bit `int`, causing an undersized heap allocation followed by an out-of-bounds write. This can crash the process or potentially lead to an out of bounds heap write. Version 7.1.2-15 contains a patch.
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
imagemagick (PTS)	bullseye	8:6.9.11.60+dfsg-1.3+deb11u4	vulnerable
	bullseye (security)	8:6.9.11.60+dfsg-1.3+deb11u9	vulnerable
	bookworm	8:6.9.11.60+dfsg-1.6+deb12u5	vulnerable
	bookworm (security)	8:6.9.11.60+dfsg-1.6+deb12u6	vulnerable
	trixie	8:7.1.1.43+dfsg1-1+deb13u4	vulnerable
	trixie (security)	8:7.1.1.43+dfsg1-1+deb13u5	vulnerable
	forky, sid	8:7.1.2.13+dfsg1-1	vulnerable

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

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

Notes

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-vhqj-f5cj-9x8h
Fixed by: https://github.com/ImageMagick/ImageMagick/commit/ffe589df5ff8ce1433daa4ccb0d2a9fadfbe30ed (7.1.2-14)