CVE-2026-78465 (GCVE-0-2026-78465)

Vulnerability from cvelistv5 – Published: 2026-08-24 16:28 – Updated: 2026-08-31 13:54
VLAI
Title
Gimp: integer overflow in pcx loader (planes=4) leads to heap overflow on 32-bit
Summary
A flaw was found in the file-pcx plugin in GIMP, affecting 32-bit builds only. When processing a PCX image file, the plugin calculates memory allocation sizes based on the image dimensions and the number of color planes. If a crafted file sets the number of planes to 4 alongside sufficiently large dimensions, the calculation exceeds the 32-bit integer limit and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when the plugin subsequently writes image data into the undersized buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 18:00 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
redhat CNA under the redhat root
CNA scorecard B 81/100 over 987 records in the last 180 days details
References
Impacted products
Date Public
2026-07-24 00:00
Credits
Red Hat would like to thank Zhixi "Jace" Sun for reporting this issue.
Show details on NVD website
To clipboard 

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