CVE-2021-41229
Memory leak in BlueZ
- State
- Published
- Severity
- 4.3 Medium
- Published
- Nov 12, 2021
- Updated
- Nov 4, 2025
- Reserved
- Sep 15, 2021
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | GitHub_M |
Weaknesses
- CWE-400 Uncontrolled Resource Consumption
Affected Products
| Product | Versions |
|---|---|
bluezbluez |
|
References
- https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq
- [debian-lts-announce] 20211127 [SECURITY] [DLA 2827-1] bluez security updatemailing-list
- https://security.netapp.com/advisory/ntap-20211203-0004/
- [debian-lts-announce] 20221024 [SECURITY] [DLA 3157-1] bluez security updatemailing-list
- https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html
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