CVE-2026-50264
High · 7.8CVSS
7.8
EPSS
0.2%
Published
Jun 5, 2026
CISA due date
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The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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