CVE-2026-80101: Gimp: multiple heap out-of-bounds reads in xwd loader from unrelated width and bytes-per-line validation

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-25 · updated 2026-09-02
Weakness: CWE-125

Description

A flaw was found in the file-xwd plugin in GIMP. When processing a specially crafted XWD image file, the plugin validates the image width and bytes-per-line parameters independently rather than ensuring their combined values are consistent with the allocated buffer size. This incorrect validation leads to improper bounds checking, causing a heap out-of-bounds read. This issue can result in an application crash, leading to a denial of service or a limited information disclosure of heap memory contents into the produced image.

Affected products

GIMP: through 3.3.1
Red Hat Enterprise Linux: 6.0, 7.0, 8.0, 9.0

References

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