CVE-2026-78465
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
29/100
Published: 2026-08-24
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
No Auth
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
High
PR:
None
UI:
Required
S:
Unchanged
C:
High
I:
High
A:
High
Description
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.
Weakness Classification (1)
References & Advisories (3)
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT