CVE-2026-112257

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.

Score

CVSS 3.1 7.8 High

Status

Awaiting Analysis - secalert@redhat.com

Published

2026-10-19

Last modified

2026-10-21

Weaknesses

CWE-121

Affected products

• Enterprise Linux (Redhat)

References

• https://access.redhat.com/security/cve/CVE-2026-112257
• https://bugzilla.redhat.com/show_bug.cgi?id=2555574