CVE-2026-66757: Integer Overflow or Wraparound in Red Hat Red Hat Enterprise Linux 6
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.
CVE-2026-66757: Integer Overflow or Wraparound in Red Hat Red Hat Enterprise Linux 6
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.
CVSS v3.1
Score 5.5medium
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-07-27T17:24:27.249Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-66757","vendor":"Red Hat"}]
Threat ID: 6a67b0129c2644c7f8ad2d2d
Added to database: 07/27/2026, 19:22:58 UTC
Last updated: 07/27/2026, 19:22:58 UTC
Views: 1
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