A flaw was found in GIMP. The PSD thumbnail resource loader performs a BGR-to-RGB channel swap with a fixed 3-byte stride and does not verify that the JPEG thumbnail is RGB. A crafted grayscale PSD thumbnail can cause a heap out-of-bounds read and write in the plug-in process, leading to a crash and potentially arbitrary code execution when the victim browses or opens the file.
History

Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Gimp
Gimp gimp
Vendors & Products Gimp
Gimp gimp

Tue, 20 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 20 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Mon, 19 Oct 2026 21:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in GIMP. The PSD thumbnail resource loader performs a BGR-to-RGB channel swap with a fixed 3-byte stride and does not verify that the JPEG thumbnail is RGB. A crafted grayscale PSD thumbnail can cause a heap out-of-bounds read and write in the plug-in process, leading to a crash and potentially arbitrary code execution when the victim browses or opens the file.
Title Gimp: gimp: heap out-of-bounds read/write in psd thumbnail loader (load_resource_1033)
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-121
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-10-19T21:37:19.467Z

Updated: 2026-10-21T20:09:47.104Z

Reserved: 2026-10-19T13:14:33.431Z

Link: CVE-2026-112257

cve-icon Vulnrichment

Updated: 2026-10-20T14:47:22.067Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-19T22:17:05.420

Modified: 2026-10-20T15:17:13.717

Link: CVE-2026-112257

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-12T00:00:00Z

Links: CVE-2026-112257 - Bugzilla