CVE-2026-66759

Description

A flaw was found in the file-icns plugin in GIMP. When applying a decompressed mask during ICNS image processing, the plugin reads from the mask data buffer without verifying if the cursor exceeds the allocated resource size. If a crafted file contains a truncated mask resource, the icns_decompress function continues reading past the bounds of the buffer. This out-of-bounds read vulnerability results in information disclosure of heap contents, where memory contents are leaked as alpha channel pixel values, or a crash leading to a denial of service if unmapped memory is accessed.

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Produits concernés

• GNOME GIMP
• Red Hat Enterprise Linux 9
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• Red Hat Enterprise Linux 8
• Gimp gimp
• Redhat enterprise linux

Scores CVSS

Faiblesses (CWE)

• CWE-125

Références

• https://access.redhat.com/errata/RHSA-2026:50817 Issue Tracking
• https://access.redhat.com/security/cve/CVE-2026-66759 Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2507557 Issue TrackingVendor Advisory
• https://gitlab.gnome.org/GNOME/gimp/-/issues/16528 ExploitIssue TrackingVendor Advisory
• https://gitlab.gnome.org/GNOME/gimp/-/issues/16528 ExploitIssue TrackingVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories