CVE-2026-93515
Published:October 28, 2026
Updated:November 04, 2026
A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by malicious X clients to crash or potentially execute code in the X server context.
Affected Packages
xwayland (CONDA):
Affected version(s) =24.1.13 <24.1.14Fix Suggestion:
Update to version 24.1.14xorg-xvfb-server (CONDA):
Affected version(s) >=21.1.23 <21.1.25Fix Suggestion:
Update to version 21.1.25https://gitlab.freedesktop.org/xorg/xserver.git (SCM_GIT):
Affected version(s) >=xwayland-26.0.99.901 <xwayland-26.0.99.903Fix Suggestion:
Update to version xwayland-26.0.99.903https://gitlab.freedesktop.org/xorg/xserver.git (SCM_GIT):
Affected version(s) >=xorg-server-1.14.99.901 <xorg-server-21.1.25 || >=xorg-server-21.0.99.1 <xorg-server-21.1.25Fix Suggestion:
Update to version xorg-server-21.1.25https://gitlab.freedesktop.org/xorg/xserver.git (SCM_GIT):
Affected version(s) >=xorg-server-26.0.99.901 <xorg-server-26.0.99.903Fix Suggestion:
Update to version xorg-server-26.0.99.903https://gitlab.freedesktop.org/xorg/xserver.git (SCM_GIT):
Affected version(s) >=xwayland-21.0.99.901 <xwayland-24.1.14 || >=xwayland-22.0.99.901 <xwayland-24.1.14 || >=xwayland-23.0.99.901 <xwayland-24.1.14 || >=xwayland-24.0.99.901 <xwayland-24.1.14Fix Suggestion:
Update to version xwayland-24.1.14Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Use After Free
EPSS
Base Score:
0.19