Integer Overflow or Wraparound Affecting gimp-libs package, versions <2:2.99.8-4.el9_6.20


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.3% (21st percentile)

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  • Snyk IDSNYK-RHEL9-GIMPLIBS-20361700
  • published1 Oct 2026
  • disclosed7 Jul 2026

Introduced: 7 Jul 2026

CVE-2026-66758  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade RHEL:9 gimp-libs to version 2:2.99.8-4.el9_6.20 or higher.
This issue was patched in RHSA-2026:73768.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gimp-libs package and not the gimp-libs package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1