X.ORG XWAYLAND · CVE-2026-109091 · Runtime
NO FIX YET · SEE WHAT TO DO
A buffer overflow in how X.Org X Server and Xwayland parse EDID display-range descriptors can be triggered by a malicious monitor. The sources say it can crash the X server or execute code.
first public Nov 13, 2026 · 1 source
Check it with your coding agent
It reads this page and tells you if your code or app is affected.
Systems running X.Org X Server or Xwayland below the fixed versions are exposed when a display reports crafted EDID data. The sources do not say which configurations are most at risk, so unknown for narrower scoping. Teams on fixed versions or on systems with no X server can skip it.
Not affected if fixed-version
Who cares linux, x-server, x.org, xwayland
Xorg -version or Xwayland -version24.1.15 and X Server before 21.1.26 are affected24.1.1521.1.26A buffer overflow in handling EDID Display-Range descriptors in X.Org xwayland before 24.1.15 and X Server before 21.1.26 could be used by malicious monitors to crash the x server or execute cote.
This page as .md · .json · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
Are you affected?
Ask from here. InfraStack checks the affected versions against your stack and answers in your inbox.
InfraStack checks the affected versions against your stack and answers in Slack, with the evidence and the fix.
InfraStack checks it against your stack and answers on your report, with the evidence and the fix.