CVE-2021-41229

Name	CVE-2021-41229
Description	BlueZ is a Bluetooth protocol stack for Linux. In affected versions a vulnerability exists in sdp_cstate_alloc_buf which allocates memory which will always be hung in the singly linked list of cstates and will not be freed. This will cause a memory leak over time. The data can be a very large object, which can be caused by an attacker continuously sending sdp packets and this may cause the service of the target device to crash.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-2827-1, DLA-3157-1
Debian Bugs	1000262

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
bluez (PTS)	buster	5.50-1.2~deb10u2	vulnerable
	buster (security)	5.50-1.2~deb10u3	fixed
	bullseye	5.55-3.1	vulnerable
	bookworm, sid	5.66-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
bluez	source	stretch	5.43-2+deb9u5	DLA-2827-1
bluez	source	buster	5.50-1.2~deb10u3	DLA-3157-1
bluez	source	(unstable)	5.62-2		1000262

Notes

[bullseye] - bluez <no-dsa> (Minor issue)
https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq
Introduced by: https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=d939483328489fb835bb425d36f7c7c73d52c388 (4.0)
Fixed by: https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=e79417ed7185b150a056d4eb3a1ab528b91d2fc0