PT-2026-65099 · Red Hat · Red Hat Enterprise Linux 6+3

CVE-2026-66757 · Published 2026-07-27 · Updated 2026-07-27

NVD

CVSS v3.1

5.5

Medium

Base vector

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

A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions (ysize and zsize) are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value (65535), the multiplication ysize * zsize overflows the standard 32-bit int boundary before being passed to calloc. This integer overflow issue results in undefined behavior, aborting the plugin and causing a denial of service.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-66757

Affected Products

Red Hat Enterprise Linux 6

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-66757 · Security Note
• https://access.redhat.com/security/cve/CVE-2026-66757 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2507465 · Note
• https://gitlab.gnome.org/GNOME/gimp/-/work_items/16494 · Note