CVE-2025-10921

Name	CVE-2025-10921
Description	GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27803.
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)
References	DLA-4341-1, DSA-6018-1
Debian Bugs	1116470

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gegl (PTS)	bullseye	1:0.4.26-2	vulnerable
	bullseye (security)	1:0.4.26-2+deb11u1	fixed
	bookworm	1:0.4.42-2	vulnerable
	bookworm (security)	1:0.4.42-2+deb12u1	fixed
	trixie	1:0.4.62-2	vulnerable
	trixie (security)	1:0.4.62-2+deb13u1	fixed
	forky, sid	1:0.4.64-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
gegl	source	bullseye	1:0.4.26-2+deb11u1	DLA-4341-1
gegl	source	bookworm	1:0.4.42-2+deb12u1	DSA-6018-1
gegl	source	trixie	1:0.4.62-2+deb13u1	DSA-6018-1
gegl	source	(unstable)	1:0.4.62-3.1		1116470

Notes

https://www.zerodayinitiative.com/advisories/ZDI-25-910/
https://gitlab.gnome.org/GNOME/gegl/-/issues/430
Fixed by: https://gitlab.gnome.org/GNOME/gegl/-/commit/0e68b7471dabf2800d780819c19bd5e6462f565f