Description
A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions (ysize and zsize) are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value (65535), the multiplication ysize * zsize overflows the standard 32-bit int boundary before being passed to calloc. This integer overflow issue results in undefined behavior, aborting the plugin and causing a denial of service.
Affected products
gimp: gimp; redhat: enterprise linux
References4
- access.redhat.com/security/cve/CVE-2026-66757 Vendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2507465 Issue TrackingVendor Advisory
- gitlab.gnome.org/GNOME/gimp/-/work_items/16494 ExploitIssue TrackingVendor Advisory
- gitlab.gnome.org/GNOME/gimp/-/work_items/16494 ExploitIssue TrackingVendor Advisory
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 14 · as of 13 November 2026
- CWE
- CWE-190
Could this be exploited in your environment?
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