CVE-2023-5380

Name	CVE-2023-5380
Description	A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3631-1, DSA-5534-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xorg-server (PTS)	bullseye	2:1.20.11-1+deb11u13	fixed
	bullseye (security)	2:1.20.11-1+deb11u14	fixed
	bookworm, bookworm (security)	2:21.1.7-3+deb12u8	fixed
	trixie	2:21.1.14-1	fixed
	sid	2:21.1.14-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
xorg-server	source	buster	2:1.20.4-1+deb10u10	DLA-3631-1
xorg-server	source	bullseye	2:1.20.11-1+deb11u8	DSA-5534-1
xorg-server	source	bookworm	2:21.1.7-3+deb12u2	DSA-5534-1
xorg-server	source	(unstable)	2:21.1.9-1

Notes

https://lists.x.org/archives/xorg-announce/2023-October/003430.html
Fixed by: https://gitlab.freedesktop.org/xorg/xserver/-/commit/564ccf2ce9616620456102727acb8b0256b7bbd7