CVE-2021-4149

medium

Description

A vulnerability was found in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service (DOS) due to a deadlock problem.

References

https://lkml.org/lkml/2021/9/13/2565

https://bugzilla.redhat.com/show_bug.cgi?id=2026485

https://lkml.org/lkml/2021/10/18/885

https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html

Details

Source: MITRE

Published: 2022-03-23

Updated: 2023-02-01

Type: CWE-667

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