VULNERABILITY INTELLIGENCE
CVE-2026-50264
CVSS score7.8 HIGH
EPSS probability0.15%
CISA KEVNot currently listed
Published2026-06-05
Last modified2026-07-27
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- secalert@redhat.com: CWE-787
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-787