CVE-2021-41229

4.3 MEDIUM
Published: November 12, 2021 Modified: November 04, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq
Source: security-advisories@github.com
Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00022.html
Source: security-advisories@github.com
Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html
Source: security-advisories@github.com
Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20211203-0004/
Source: security-advisories@github.com
Third Party Advisory
https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00022.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20211203-0004/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

9 reference(s) from NVD

Quick Stats

CVSS v3 Score
4.3 / 10.0
EPSS (Exploit Probability)
0.0%
7th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

bluez debian