CVE-2021-3939

Name	CVE-2021-3939
Description	Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static storage, to be freed, in the user_change_language_authorized_cb function. This is reachable via the SetLanguage dbus function. This is fixed in versions 0.6.55-0ubuntu12~20.04.5, 0.6.55-0ubuntu13.3, 0.6.55-0ubuntu14.1.
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 patch)
https://ubuntu.com/security/CVE-2021-3939