CVE-2021-3752 Information

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.

CVSS Vector

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

Reference

https://lore.kernel.org/lkml/20211115165435.133245729@linuxfoundation.org/ https://www.openwall.com/lists/oss-security/2021/09/15/4 https://bugzilla.redhat.com/show_bug.cgi?id=1999544 https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html https://www.debian.org/security/2022/dsa-5096 https://security.netapp.com/advisory/ntap-20220318-0009/

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.1