6.1 Medium

CVE-2026-82328 Gimp: heap out-of-bounds read in ico loader via unvalidated used_clrs palette count

Description

A flaw was found in the file-ico plugin in GIMP. When processing a specially crafted ICO image file, the plugin does not properly validate the used_clrs (palette count) parameter. This incorrect validation leads to improper memory bounds checking, resulting in a heap out-of-bounds read. This issue can result in an application crash, leading to a denial of service or a limited information disclosure of heap memory contents.

CVSS 3.1 detail

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Exploitable with local access to the machine, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector: Local
Attack complexity: Low
Privileges required: None
Interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: High

Affected products and versions

Product	Affected versions	Fixed in
Red Hat Enterprise Linux 6	Versions not published
Red Hat Enterprise Linux 7	Versions not published
Red Hat Enterprise Linux 8	Versions not published
Red Hat Enterprise Linux 9	Versions not published
GIMP	Versions not published

References

access.redhat.com access.redhat.com
RHBZ#2525612 bugzilla.redhat.com
gitlab.gnome.org gitlab.gnome.org

Timeline

Published August 28, 2026
Last modified November 6, 2026

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