GIMP ICO 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 ICO 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-28599.
https://www.zerodayinitiative.com/advisories/ZDI-26-050/
https://gitlab.gnome.org/GNOME/gimp/-/commit/69cc6b1a6645dc9c4d7b484483dbe6a84b922b9c
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0797.json
https://bugzilla.redhat.com/show_bug.cgi?id=2441524
https://access.redhat.com/security/cve/CVE-2026-0797
https://access.redhat.com/errata/RHSA-2026:5437
https://access.redhat.com/errata/RHSA-2026:5436
https://access.redhat.com/errata/RHSA-2026:5435
https://access.redhat.com/errata/RHSA-2026:5434
https://access.redhat.com/errata/RHSA-2026:5391
https://access.redhat.com/errata/RHSA-2026:5390
https://access.redhat.com/errata/RHSA-2026:5389
https://access.redhat.com/errata/RHSA-2026:5388