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CVE-2021-41229

Published: 12 November 2021

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.

Priority

Low

CVSS 3 base score: 6.5

Status

Package Release Status
bluez
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.10 (Impish Indri)
Released (5.60-0ubuntu2.1)
Ubuntu 21.04 (Hirsute Hippo)
Released (5.56-0ubuntu4.3)
Ubuntu 20.04 LTS (Focal Fossa)
Released (5.53-0ubuntu3.4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (5.48-0ubuntu3.6)
Ubuntu 16.04 ESM (Xenial Xerus) Needed

Ubuntu 14.04 ESM (Trusty Tahr) Ignored
(out of standard support)
Patches:
Upstream: https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=e79417ed7185b150a056d4eb3a1ab528b91d2fc0