CVE-2026-50264
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dri2 drigetbuffers/drigetbufferswithformat
Description
An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.
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:HIntegrityHigh
A:HAvailabilityHigh
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, xlib, libx11
and 9 more affected products View all →
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
2 techniques Initial Access
Privilege Escalation
References
https://access.redhat.com/security/cve/CVE-2026-50264
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2485389
bugzilla.redhat.com
https://gitlab.freedesktop.org/xorg/xserver/-/commit/339c279514326134b0878fc23ce6e9520440ce7f
gitlab.freedesktop.org
and 34 more references View all →
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