CVE-2025-46805

NameCVE-2025-46805
DescriptionScreen version 5.0.0 and older version 4 releases have a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root.
SourceCVE (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 PackageReleaseVersionStatus
screen (PTS)bullseye4.8.0-6vulnerable
bookworm4.9.0-4vulnerable
sid, trixie4.9.1-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
screensource(unstable)4.9.1-3unimportant

Notes

Fixed by: https://git.savannah.gnu.org/cgit/screen.git/commit/?id=161f85b98b7e1d5e4893aeed20f4cdb5e3dfaaa4
https://www.openwall.com/lists/oss-security/2025/05/12/1
screen in Debian not installed setuid or setgid

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