CVE-2023-24626

Name	CVE-2023-24626
Description	socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
screen (PTS)	bullseye	4.8.0-6	vulnerable
	bookworm	4.9.0-4	vulnerable
	sid, trixie	4.9.1-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
screen	source	(unstable)	4.9.1-1	unimportant

Notes

https://savannah.gnu.org/bugs/?63195 (private)
https://git.savannah.gnu.org/cgit/screen.git/commit/?id=e9ad41bfedb4537a6f0de20f00b27c7739f168f7
screen in Debian not installed setuid or setgid