Detections
Analytics
CVE-2026-50264
high
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.
References
https://redhat.atlassian.net/browse/PSIRTSUPT-16950
https://lists.x.org/archives/xorg-announce/2026-June/003702.html
https://gitlab.freedesktop.org/xorg/xserver/-/commit/339c279514326134b0878fc23ce6e9520440ce7f