Heap Out-of-Bounds Read in GDK-Pixbuf Affects GNOME Products
CVE-2026-18090

6.1MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
8 September 2026

What is CVE-2026-18090?

A flaw in gdk-pixbuf allows remote attackers to exploit specially crafted Apple Icon Image (.icns) files to trigger a heap out-of-bounds read in the uncompress() function. This occurs due to insufficient validation of the source buffer's boundaries during the decompression of RLE-encoded ICNS icon data. Successful exploitation could lead to a denial of service, causing the application to crash, or result in sensitive information being disclosed from adjacent memory.

References

https://access.redhat.com/security/cve/CVE-2026-18090
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2517751
issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/308

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Alexandru Hossu for reporting this issue.
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