CVE-2026-109092
X.Org Server XvShmPutImage Shared-Memory Bounds Overflow
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
Incorrectly handled negative sizes when processing ProcXvShmPutImage requests in the X.Org xwayland before 24.1.15 and X Server before 21.1.26 could be used by local authenticated X clients to crash the X server or execute code.
| CWE | CWE-191 |
| Vendor | x.org |
| Product | xwayland |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
X.Org / xwayland
0 < 24.1.15
X.Org / xorg-x11-server
0 < 21.1.26
References
Credits
Acts1631 <[email protected]>