CVE-2021-41229 Memory leak in BlueZ

2021-11-1200:00:00

CWE-400

GitHub_M

www.cve.org

4.3 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

6.7 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

29.4%

JSON

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.

CNA Affected

[
  {
    "vendor": "bluez",
    "product": "bluez",
    "versions": [
      {
        "version": "= 5.58",
        "status": "affected"
      }
    ]
  }
]