CVE-2021-4149medium
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