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Public vulnerability disclosure

CVE-2026-42169

Gimp: gimp apng loader heap-buffer-overflow when fctl width exceeds ihdr width (file-png.c)

publishedCWE-131

A heap-buffer-overflow vulnerability exists in the APNG (Animated PNG) file loader of GIMP. This flaw occurs when the `fcTL` width exceeds the `IHDR` width, leading to pixel data being written past the end of a heap allocation. Additionally, a heap-based buffer overflow exists in the DDS plug-in due to a BPP mismatch in the `load_layer()` function. Both vulnerabilities can be triggered by opening a specially crafted image file, potentially leading to code execution.

Investigate in Cyber JSONMarkdown
Technical severity7.3 highCVSS 3.1 · CNA: redhat
Published2026-08-04Source updated 2026-11-02
Collected2026-11-022 attributed sources

Fixes and workarounds

Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Source: CNA: redhat

Affected products and versions

ProductVersionsAuthority
Red Hat Enterprise Linux 9
Red Hat
gimp
https://access.redhat.com/downloads/content/package-browser/ 		≥ 2:3.0.4-4.el9_8.9; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Red Hat
gimp
https://access.redhat.com/downloads/content/package-browser/ 		≥ 2:2.99.8-4.el9_2.7; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
Red Hat
gimp
https://access.redhat.com/downloads/content/package-browser/ 		≥ 2:2.99.8-4.el9_4.19; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.6 Extended Update Support
Red Hat
gimp
https://access.redhat.com/downloads/content/package-browser/ 		≥ 2:2.99.8-4.el9_6.20; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 6
Red Hat
gimp
https://access.redhat.com/downloads/content/package-browser/ 		Range not reported
Other versions: unaffected 		CNA: redhat
Red Hat Enterprise Linux 7
Red Hat
gimp
https://access.redhat.com/downloads/content/package-browser/ 		Range not reported
Other versions: unaffected 		CNA: redhat
Red Hat Enterprise Linux 8
Red Hat
gimp:2.8/gimp
https://access.redhat.com/downloads/content/package-browser/ 		Range not reported
Other versions: unaffected 		CNA: redhat

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

Version / scoreVectorAuthority
3.1 / 7.3
high		 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HCNA: redhat

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References