Vulnerability Description
A flaw was found in gdk-pixbuf. When parsing a specially crafted ICO file with pixel values that exceed the defined palette range, an out-of-bounds read can occur due to improper bounds checking against the actual palette size. This vulnerability causes heap bytes to be interpreted as valid palette indices and rendered as RGB pixel values in the output image, allowing an attacker to extract heap content via the generated output, such as a thumbnail.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2026-16768
- https://bugzilla.redhat.com/show_bug.cgi?id=2506437
- https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/302
- https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/302
FAQ
What is CVE-2026-16768?
CVE-2026-16768 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A flaw was found in gdk-pixbuf. When parsing a specially crafted ICO file with pixel values that exceed the defined palette range, an out-of-bounds read can occur due to improper bounds checking again...
How severe is CVE-2026-16768?
CVE-2026-16768 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-16768?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.