CVE-2021-3564

medium

Description

A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1964139

http://www.openwall.com/lists/oss-security/2021/06/01/2

http://www.openwall.com/lists/oss-security/2021/05/25/1

https://www.openwall.com/lists/oss-security/2021/05/25/1

https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html

https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html

Details

Source: MITRE

Published: 2021-06-08

Updated: 2022-05-16

Type: CWE-415

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM