CVE-2026-42170

Name	CVE-2026-42170
Description	A heap-based buffer overflow vulnerability exists in the GIMP DDS (DirectDraw Surface) file parser. When a crafted DDS file declares a D3D9 pixel format but sets a lower bits-per-pixel (bpp) value in the header, the loader allocates an undersized heap buffer. Subsequent pixel data consumption at the real format's stride causes a write past the heap buffer boundary, leading to heap metadata corruption and potential code execution.
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
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	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gimp	source	(unstable)	3.2.4-1

Notes

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16161
https://gitlab.gnome.org/GNOME/gimp/-/merge_requests/2758
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/7dff816fbd58fe17456405f19db332ef5d2a44a0 (GIMP_3_2_4)