CVE-2021-41229

MEDIUM
Published Nov 12, 20214y ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Nov 12, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-400 Uncontrolled Resource Consumption Resource Mgmt
CWE-401

Affected Products 3

VendorProductVersionRange
bluezbluez5.58any
debiandebian_linux9.0any
debiandebian_linux10.0any

References 5

  • github.com https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq
    ExploitThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2021/11/msg00022.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html
  • security.netapp.com https://security.netapp.com/advisory/ntap-20211203-0004/
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.