CVE-2026-66758

Description

A flaw was found in the file-fits plugin in GIMP. When processing a FITS image file, the plugin calculates memory allocation sizes using signed 32-bit integers for width and height. If a crafted file sets both values to large values, their product exceeds 2^31 and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when cfitsio subsequently writes a full row of pixels in the buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.

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Produits concernés

• GNOME GIMP
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9
• Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
• Red Hat Enterprise Linux 9.6 Extended Update Support
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• Gimp gimp
• Redhat enterprise linux

Scores CVSS

Faiblesses (CWE)

• CWE-190

Références

• https://access.redhat.com/errata/RHSA-2026:50817 Issue Tracking
• https://access.redhat.com/errata/RHSA-2026:62507
• https://access.redhat.com/errata/RHSA-2026:73768
• https://access.redhat.com/errata/RHSA-2026:80509
• https://access.redhat.com/security/cve/CVE-2026-66758 Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2507475 Issue TrackingVendor Advisory
• https://gitlab.gnome.org/GNOME/gimp/-/issues/16528 ExploitIssue TrackingVendor Advisory

Ailleurs

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