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CVE-2026-66759

Gimp: out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted icns images

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

A flaw was found in the file-icns plugin in GIMP. When applying a decompressed mask during ICNS image processing, the plugin reads from the mask data buffer without verifying if the cursor exceeds the allocated resource size. If a crafted file contains a truncated mask resource, the icns_decompress function continues reading past the bounds of the buffer. This out-of-bounds read vulnerability results in information disclosure of heap contents, where memory contents are leaked as alpha channel pixel values, or a crash leading to a denial of service if unmapped memory is accessed.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • gimp

    From 2.99.14

  • gimp

    Version range not reported

  • gimp

    Version range not reported

  • gimp

    Version range not reported

  • gimp:2.8/gimp

    Version range not reported

References 4

access.redhat.com

bugzilla.redhat.com

gitlab.gnome.org