CVE-2021-4149

CVSS V2 Low 2.1 CVSS V3 Medium 5.5
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.
Overview
  • CVE ID
  • CVE-2021-4149
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-03-23T20:15:09
  • Last Modified Date
  • 2023-02-01T15:53:09
Weakness Enumerations
CWE URL
CWE-667 http://cwe.mitre.org/data/definitions/667.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.15
cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 2.1
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
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
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-4149
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4149
History
Created Old Value New Value Data Type Notes
2022-04-04 00:40:19 Added to TrackCVE
2022-12-06 13:08:04 2022-03-23T20:15Z 2022-03-23T20:15:09 CVE Published Date updated
2022-12-06 13:08:04 2022-07-01T14:15:08 CVE Modified Date updated
2022-12-06 13:08:04 Undergoing Analysis Vulnerability Status updated
2022-12-06 13:08:09 References updated
2023-02-01 16:13:34 2023-02-01T15:53:09 CVE Modified Date updated
2023-02-01 16:13:34 Undergoing Analysis Analyzed Vulnerability Status updated