CVE-2026-66757

Name	CVE-2026-66757
Description	A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions (ysize and zsize) are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value (65535), the multiplication ysize * zsize overflows the standard 32-bit int boundary before being passed to calloc. This integer overflow issue results in undefined behavior, aborting the plugin and causing a denial of service.
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)
Debian Bugs	1142990

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gimp (PTS)	bullseye	2.10.22-4+deb11u2	vulnerable
	bullseye (security)	2.10.22-4+deb11u8	vulnerable
	bookworm, bookworm (security)	2.10.34-1+deb12u10	vulnerable
	trixie	3.0.4-3+deb13u9	vulnerable
	trixie (security)	3.0.4-3+deb13u8	vulnerable
	forky, sid	3.2.4-3	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gimp	source	(unstable)	(unfixed)			1142990

Notes

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16494
https://gitlab.gnome.org/GNOME/gimp/-/merge_requests/2884
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/adb89f0f2c086240fc49f6e2c946d89e10b66a70
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/2fc788b6d952348cb75dc8d88a34555e6baca54d
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/f6043c7da323f7a0b1f7427e30d2d68126d01545