CVE-2021-4149

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-4149
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

2.1 /10

CVSS v2.0 : LOW

V2 Legend

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

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://bugzilla.redhat.com/show_bug.cgi?id=2026485 Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html Mailing List Third Party Advisory
https://lkml.org/lkml/2021/10/18/885 Exploit Mailing List Patch Third Party Advisory
https://lkml.org/lkml/2021/9/13/2565 Exploit Mailing List Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
History

01 Feb 2023, 15:53

Type Values Removed Values Added
First Time Debian
Debian debian Linux
References (MLIST) https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html - (MLIST) https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html - Mailing List, Third Party Advisory
CPE cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

01 Jul 2022, 14:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html -

22 Jun 2022, 15:55

Type Values Removed Values Added
CPE cpe:2.3:a:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:-:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*		 cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*

30 Mar 2022, 14:37

Type Values Removed Values Added
CPE cpe:2.3:a:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:-:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:a:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
CWE CWE-667
CVSS v2 : unknown
v3 : unknown 		v2 : 2.1
v3 : 5.5
References (MISC) https://lkml.org/lkml/2021/9/13/2565 - (MISC) https://lkml.org/lkml/2021/9/13/2565 - Exploit, Mailing List, Third Party Advisory
References (MISC) https://lkml.org/lkml/2021/10/18/885 - (MISC) https://lkml.org/lkml/2021/10/18/885 - Exploit, Mailing List, Patch, Third Party Advisory
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2026485 - (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2026485 - Issue Tracking, Third Party Advisory

23 Mar 2022, 20:15

Type Values Removed Values Added
New CVE
Information

Published : 2022-03-23 20:15

Updated : 2023-12-10 14:22

NVD link : CVE-2021-4149

Mitre link : CVE-2021-4149

CVE.ORG link : CVE-2021-4149

JSON object : View

Products Affected

linux

  • linux_kernel

debian

  • debian_linux
CWE
CWE-667

Improper Locking