UBUNTU-CVE-2021-3506

Advisory lineage Upstream: 1 Downstream: 6
Upstream
CVE-2021-3506
Published: 19 Apr 2021, 22:15
Last modified:03 Jun 2026, 13:34

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Apr 2021, 22:15
Published
Vulnerability first disclosed
03 Jun 2026, 13:34
Last Modified
Vulnerability information updated

Description

An out-of-bounds (OOB) memory access flaw was found in fs/f2fs/node.c in the f2fs module in the Linux kernel in versions before 5.12.0-rc4. A bounds check failure allows a local attacker to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Systems

  • ubuntu•linux

    all | < 4.4.0-222.255 | < 4.15.0-173.182 | < 5.4.0-77.86

  • ubuntu•linux-aws

    < 4.4.0-1102.107 | < 4.4.0-1138.152 | < 4.15.0-1124.133 | < 5.4.0-1051.53

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1051.53~18.04.1

  • ubuntu•linux-aws-5.8

    < 5.8.0-1041.43~20.04.1

  • ubuntu•linux-aws-fips

    < 4.15.0-2064.67 | all | < 5.4.0-1069.73+fips2

  • ubuntu•linux-aws-hwe

    < 4.15.0-1124.133~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1134.147~14.04.1 | < 4.15.0-1134.147~16.04.1 | all | < 5.4.0-1051.53

  • ubuntu•linux-azure-4.15

    < 4.15.0-1134.147

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1051.53~18.04.1

  • ubuntu•linux-azure-5.8

    < 5.8.0-1039.42~20.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde-5.15

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2046.50 | all | < 5.4.0-1073.76+fips1

  • ubuntu•linux-bluefield

    < 5.4.0-1013.16 | all

  • ubuntu•linux-dell300x

    < 4.15.0-1038.43

  • ubuntu•linux-fips

    < 4.4.0-1072.78 | all | < 4.15.0-1081.90 | < 5.4.0-1028.32

  • ubuntu•linux-gcp

    < 4.15.0-1119.133~16.04.1 | all | < 5.4.0-1046.49

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1119.133

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1046.49~18.04.1

  • ubuntu•linux-gcp-5.8

    < 5.8.0-1038.40~20.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2029.32 | all | < 5.4.0-1067.71~20.04.1

  • ubuntu•linux-gke

    < 5.4.0-1046.48

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.4

    < 5.4.0-1046.48~18.04.1

  • ubuntu•linux-gkeop

    < 5.4.0-1018.19

  • ubuntu•linux-gkeop-5.4

    < 5.4.0-1018.19~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-173.182~16.04.1 | all

  • ubuntu•linux-hwe-5.4

    < 5.4.0-77.86~18.04.1

  • ubuntu•linux-hwe-5.8

    < 5.8.0-63.71~20.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1103.112 | < 4.15.0-1110.113 | < 5.4.0-1041.42

  • ubuntu•linux-lts-xenial

    < 4.4.0-222.255~14.04.1

  • ubuntu•linux-nvidia

    all

  • ubuntu•linux-oem

    all

  • ubuntu•linux-oem-5.10

    < 5.10.0-1032.33

  • ubuntu•linux-oem-5.6

    all

  • ubuntu•linux-oracle

    < 4.15.0-1090.99~16.04.1 | < 4.15.0-1090.99 | < 5.4.0-1048.52

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-oracle-5.3

    all

  • ubuntu•linux-oracle-5.4

    < 5.4.0-1048.52~18.04.1

  • ubuntu•linux-oracle-5.8

    < 5.8.0-1037.38~20.04.1

  • ubuntu•linux-raspi

    < 5.4.0-1038.41

  • ubuntu•linux-raspi-5.4

    < 5.4.0-1038.41~18.04.1

  • ubuntu•linux-raspi-realtime

    all

Showing first 50 affected entries in server-rendered view.

References (14)