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.
Notes
Author | Note |
---|---|
sbeattie | introduced in d939483328489fb835bb425d36f7c7c73d52c388 (v4.0) |
Priority
Status
Package | Release | Status |
---|---|---|
bluez Launchpad, Ubuntu, Debian |
trusty |
Ignored
(end of standard support)
|
upstream |
Needs triage
|
|
xenial |
Needed
|
|
bionic |
Released
(5.48-0ubuntu3.6)
|
|
focal |
Released
(5.53-0ubuntu3.4)
|
|
hirsute |
Released
(5.56-0ubuntu4.3)
|
|
impish |
Released
(5.60-0ubuntu2.1)
|
|
jammy |
Released
(5.62-0ubuntu2)
|
|
kinetic |
Released
(5.62-0ubuntu2)
|
|
lunar |
Released
(5.62-0ubuntu2)
|
|
Patches: upstream: https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=e79417ed7185b150a056d4eb3a1ab528b91d2fc0 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.5 |
Attack vector | Adjacent |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |