CVE-2021-4149

Aliases:UBUNTU-CVE-2021-4149DEBIAN-CVE-2021-4149
Advisory lineage Upstream: 0 Downstream: 23
Modified
Published: 23 Mar 2022, 19:46
Last modified:03 Aug 2024, 17:16

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.4% LOW
0% probability +0.38%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected

Timeline

23 Mar 2022, 19:46
Published
Vulnerability first disclosed
03 Aug 2024, 17:16
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v4.0•MEDIUM•Score: 5.7CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.40%• Percentile: 34%

Techniques & Countermeasures

  • CWE-667•Improper Locking

    The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Affected Systems

  • debian•linux

    all | < 5.14.16-1 | < 5.14.16-1 | < 5.14.16-1

  • ubuntu•linux

    < 4.4.0-239.273 | < 4.15.0-184.194 | < 5.4.0-92.103

  • ubuntu•linux-aws

    < 4.4.0-1117.123 | < 4.4.0-1155.170 | < 4.15.0-1133.143 | < 5.4.0-1061.64

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    < 5.11.0-1023.24~20.04.1

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1061.64~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2072.76 | all | < 5.4.0-1069.73+fips2

  • ubuntu•linux-aws-hwe

    < 4.15.0-1133.143~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1142.156~14.04.1 | < 4.15.0-1142.156~16.04.1 | all | < 5.4.0-1065.68

  • ubuntu•linux-azure-4.15

    < 4.15.0-1142.156

  • ubuntu•linux-azure-5.11

    < 5.11.0-1023.24~20.04.1

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1065.68~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2053.58 | all | < 5.4.0-1073.76+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1023.26

  • ubuntu•linux-dell300x

    < 4.15.0-1047.52

  • ubuntu•linux-fips

    < 4.4.0-1088.95 | all | < 4.15.0-1090.100 | < 5.4.0-1038.44

  • ubuntu•linux-gcp

    < 4.15.0-1127.142~16.04.1 | all | < 5.4.0-1059.63

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1127.142

  • ubuntu•linux-gcp-5.11

    < 5.11.0-1024.26~20.04.1

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1059.63~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2037.41 | all | < 5.4.0-1067.71~20.04.1

  • ubuntu•linux-gke

    < 5.4.0-1057.60

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.4

    < 5.4.0-1057.60~18.04.1

  • ubuntu•linux-gkeop

    < 5.4.0-1029.30

  • ubuntu•linux-gkeop-5.4

    < 5.4.0-1029.30~18.04.2

  • ubuntu•linux-hwe

    < 4.15.0-184.194~16.04.1 | all

  • ubuntu•linux-hwe-5.11

    all

  • ubuntu•linux-hwe-5.13

    < 5.13.0-23.23~20.04.2

  • ubuntu•linux-hwe-5.4

    < 5.4.0-92.103~18.04.2

  • ubuntu•linux-hwe-5.8

    all

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-ibm

    < 5.4.0-1010.11

  • ubuntu•linux-intel-5.13

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1118.128 | < 4.15.0-1119.123 | < 5.4.0-1051.53

  • ubuntu•linux-lts-xenial

    < 4.4.0-239.273~14.04.1

  • ubuntu•linux-oem

    all

  • ubuntu•linux-oem-5.10

    < 5.10.0-1051.53

  • ubuntu•linux-oem-5.13

    < 5.13.0-1026.32

  • ubuntu•linux-oem-5.14

    < 5.14.0-1007.7

  • ubuntu•linux-oem-5.6

    all

  • ubuntu•linux-oracle

    < 4.15.0-1098.108~16.04.1 | < 4.15.0-1098.108 | < 5.4.0-1059.63

Showing first 50 affected entries in server-rendered view.

References (12)