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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) Needed

Ubuntu 21.04 (Hirsute Hippo) Needed

Ubuntu 20.04 LTS (Focal Fossa) Needed

Ubuntu 18.04 LTS (Bionic Beaver) Needed

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