CVE-2021-41229
Publication date 12 November 2021
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
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.
Status
Package | Ubuntu Release | Status |
---|---|---|
bluez | 24.04 LTS noble |
Fixed 5.62-0ubuntu2
|
22.04 LTS jammy |
Fixed 5.62-0ubuntu2
|
|
20.04 LTS focal |
Fixed 5.53-0ubuntu3.4
|
|
18.04 LTS bionic |
Fixed 5.48-0ubuntu3.6
|
|
16.04 LTS xenial |
Vulnerable
|
|
14.04 LTS trusty | Ignored end of standard support |
Notes
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.5 · Medium |
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 |
References
Related Ubuntu Security Notices (USN)
- USN-5155-1
- BlueZ vulnerabilities
- 23 November 2021