Description
A flaw was found in libXpm. A local user with low privileges could exploit an Out-of-Bounds Read vulnerability in the `xpmNextWord()` function by processing a specially crafted or very small XPM (X PixMap) image file. This improper validation of file boundaries can cause an internal pointer to read beyond the file's end, leading to application crashes and Denial of Service conditions.
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:30354
- VENDOR_ADVISORYhttps://access.redhat.com/security/cve/CVE-2026-4367
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=2448984
- MISChttps://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/5448e1bd
- MAILING_LISThttps://seclists.org/oss-sec/2026/q2/192