CVE-2026-61897

Name	CVE-2026-61897
Description	An Ubuntu-specific patch to AccountsService before 23.13.9-8ubuntu7 only partially drops privileges before launching language helper scripts. It changes the effective UID/GID to the target user but leaves the real UID as 0 (root). A shell spawned by a helper script inherits ruid=0 and may reset its effective UID to root, enabling local privilege escalation.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
accountsservice (PTS)	bullseye	0.6.55-3	fixed
	bookworm	22.08.8-6	fixed
	trixie	23.13.9-7	fixed
	forky, sid	23.13.9-8	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
accountsservice	source	(unstable)	(not affected)

- accountsservice <not-affected> (Ubuntu-specific changes)
https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/2157985