CVE-2026-92248: Gimp: integer overflow when generating a thumbnail preview for a psd file

Severity: high (CVSS 7.8 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: 2026-09-15 · updated 2026-10-19
Weakness: CWE-190

Description

A flaw was found in the file-psd plugin in GIMP. When generating a thumbnail preview for a specially crafted PSD (Photoshop Document) image file, an integer overflow occurs during the multiplication of values from an embedded JPEG header. This leads to an undersized heap allocation, resulting in a heap-based buffer overflow when the image data is decoded. This buffer overflow corrupts adjacent heap objects, allowing for a controlled memory write that can result in an application crash or arbitrary code execution.

Affected products

GIMP: all versions
Red Hat Enterprise Linux 10: all versions
Red Hat Enterprise Linux 6: all versions
Red Hat Enterprise Linux 7: all versions
Red Hat Enterprise Linux 8: all versions — fixed in 8100020261015094823.4c9c024f
Red Hat Enterprise Linux 9: all versions — fixed in 2:3.0.4-4.el9_8.14

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 8 8100020261015094823.4c9c024f; Red Hat Enterprise Linux 9 2:3.0.4-4.el9_8.14. Check the vendor advisory for mitigations.

References

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