VULNERABILITY INTELLIGENCE

CVE-2021-3752

CVSS score7.1 HIGH
EPSS probability1.74%
CISA KEVNot currently listed
Published2022-02-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

A use-after-free flaw was found in the Linux kernel’s Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Weakness classification

  • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
  • CWE-416: Use After Free

Primary references