CVE-2021-44879

Aliases:UBUNTU-CVE-2021-44879DEBIAN-CVE-2021-44879
Advisory lineage Upstream: 0 Downstream: 28
Modified
Published: 13 Feb 2022, 00:00
Last modified:04 Aug 2024, 04:32

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
1.23% LOW
1% probability +1.17%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

13 Feb 2022, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 04:32
Last Modified
Vulnerability information updated

Description

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 1.23%• Percentile: 68%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • debian•linux

    < 5.10.205-2 | < 5.16.7-1 | < 5.16.7-1 | < 5.16.7-1

  • ubuntu•linux

    all | < 5.4.0-173.191

  • ubuntu•linux-aws

    all | < 5.4.0-1120.130

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    < 5.13.0-1022.24~20.04.1

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1120.130~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-fips

    all | < 5.4.0-1120.130+fips1

  • ubuntu•linux-aws-hwe

    all

  • ubuntu•linux-azure

    all | all | < 5.4.0-1126.133

  • ubuntu•linux-azure-4.15

    all

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    < 5.13.0-1022.26~20.04.1

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1126.133~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fips

    all | < 5.4.0-1126.133+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1080.87

  • ubuntu•linux-fips

    all | < 5.4.0-1094.104

  • ubuntu•linux-gcp

    all | all | < 5.4.0-1124.133

  • ubuntu•linux-gcp-4.15

    all

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    < 5.13.0-1024.29~20.04.1

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1124.133~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-fips

    all | < 5.4.0-1124.133+fips1

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.4

    all

  • ubuntu•linux-gkeop

    < 5.4.0-1087.91

  • ubuntu•linux-gkeop-5.4

    all

  • ubuntu•linux-hwe

    all | all

  • ubuntu•linux-hwe-5.11

    all

  • ubuntu•linux-hwe-5.13

    < 5.13.0-40.45~20.04.1

  • ubuntu•linux-hwe-5.4

    < 5.4.0-173.191~18.04.1

  • ubuntu•linux-hwe-5.8

    all

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-ibm

    < 5.4.0-1067.72

  • ubuntu•linux-ibm-5.4

    < 5.4.0-1067.72~18.04.1

  • ubuntu•linux-intel-5.13

    < 5.13.0-1011.11

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-iot

    < 5.4.0-1032.33

  • ubuntu•linux-kvm

    all | < 5.4.0-1108.115

  • ubuntu•linux-lts-xenial

    all

  • ubuntu•linux-oem

    all

Showing first 50 affected entries in server-rendered view.

References (17)