CVE-2023-1393

NameCVE-2023-1393
DescriptionA flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3372-1, DSA-5380-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xorg-server (PTS)buster2:1.20.4-1+deb10u4vulnerable
buster (security)2:1.20.4-1+deb10u14fixed
bullseye2:1.20.11-1+deb11u11fixed
bullseye (security)2:1.20.11-1+deb11u13fixed
bookworm2:21.1.7-3+deb12u5fixed
bookworm (security)2:21.1.7-3+deb12u7fixed
sid, trixie2:21.1.12-1fixed
xwayland (PTS)bookworm2:22.1.9-1fixed
sid, trixie2:24.1.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xorg-serversourcebuster2:1.20.4-1+deb10u9DLA-3372-1
xorg-serversourcebullseye2:1.20.11-1+deb11u6DSA-5380-1
xorg-serversource(unstable)2:21.1.7-2
xwaylandsource(unstable)2:22.1.9-1

Notes

https://www.openwall.com/lists/oss-security/2023/03/29/1
https://gitlab.freedesktop.org/xorg/xserver/-/commit/26ef545b3502f61ca722a7a3373507e88ef64110

Search for package or bug name: Reporting problems