CVE-2025-14282

Name	CVE-2025-14282
Description	A flaw was found in Dropbear. When running in multi-user mode and authenticating users, the dropbear ssh server does the socket forwardings requested by the remote client as root, only switching to the logged-in user upon spawning a shell or performing some operations like reading the user's files. With the recent ability of also using unix domain sockets as the forwarding destination any user able to log in via ssh can connect to any unix socket with the root's credentials, bypassing both file system restrictions and any SO_PEERCRED / SO_PASSCRED checks performed by the peer.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-6086-1
Debian Bugs	1123069

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
dropbear (PTS)	bullseye	2020.81-3+deb11u2	fixed
	bullseye (security)	2020.81-3+deb11u3	fixed
	bookworm	2022.83-1+deb12u3	fixed
	trixie (security), trixie	2025.89-1~deb13u1	fixed
	forky, sid	2025.89-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
dropbear	source	bullseye	(not affected)
dropbear	source	bookworm	(not affected)
dropbear	source	trixie	2025.89-1~deb13u1	DSA-6086-1
dropbear	source	(unstable)	2025.89-1		1123069

Notes

[bookworm] - dropbear <not-affected> (Vulnerable code introduced later)
[bullseye] - dropbear <not-affected> (Vulnerable code introduced later)
https://github.com/mkj/dropbear/pull/391
https://github.com/mkj/dropbear/pull/394
https://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2025q4/002390.html
https://github.com/turistu/odds-n-ends/blob/main/CVE-2025-14282.md