vulnerability
FreeBSD: VID-96d84238-b500-490b-b6aa-2b77090a0410 (CVE-2023-1393): xorg-server -- Overlay Window Use-After-Free
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Mar 29, 2023 | Mar 31, 2023 | Dec 10, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Mar 29, 2023
Added
Mar 31, 2023
Modified
Dec 10, 2025
Description
The X.Org project reports: ZDI-CAN-19866/CVE-2023-1393: X.Org Server Overlay Window Use-After-Free Local Privilege Escalation Vulnerability If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.
Solutions
freebsd-upgrade-package-xorg-serverfreebsd-upgrade-package-xephyrfreebsd-upgrade-package-xorg-vfbserverfreebsd-upgrade-package-xorg-nestserverfreebsd-upgrade-package-xwaylandfreebsd-upgrade-package-xwayland-devel
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