CVE-2026-42169: Incorrect Calculation of Buffer Size in Red Hat Red Hat Enterprise Linux 6
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.
CVE-2026-42169: Incorrect Calculation of Buffer Size in Red Hat Red Hat Enterprise Linux 6
Description
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.
CVSS v3.1
Score 7.3high
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-04-24T20:54:37.044Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-42169","vendor":"Red Hat"}]
Threat ID: 6a715d90bf32cb7a34ac2b38
Added to database: 08/04/2026, 03:33:36 UTC
Last updated: 08/04/2026, 03:33:36 UTC
Views: 1
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