CVE-2026-50264EPSS p4.5%
CVE-2026-50264CVE-2026-50264
x.org / x_server
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.
Scoring
| CVSS | 7.8 () |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 0.15% probability of exploitation · percentile 4.5% · 2026-08-02T12:03:13Z |
| Last modified | 2026-07-27 |
Related by meaning· 6
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