CVE-2026-50262
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in glx changedrawableattributes
Description
An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Red Hat Inc.
commercial·USaka redhat, Red Hat
x.org
oss-project·US
Сообщество свободного программного обеспечения
oss-projectaka fsf
X.Org Foundation
oss-project·USaka xorg-server, libx11, xlib
and 10 more affected products View all →
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Collection
References
https://access.redhat.com/security/cve/CVE-2026-50262
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2485387
bugzilla.redhat.com
https://gitlab.freedesktop.org/xorg/xserver/-/commit/6d459e4daf715bea8abdafa8fb130be2f8a1d145
gitlab.freedesktop.org
and 34 more references View all →
News mentions
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