CVE-2020-36691

Aliases:UBUNTU-CVE-2020-36691DEBIAN-CVE-2020-36691
Advisory lineage Upstream: 0 Downstream: 16
Modified
Published: 24 Mar 2023, 00:00
Last modified:21 Feb 2025, 16:03

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.24% LOW
0% probability +0.22%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Mar 2023, 00:00
Published
Vulnerability first disclosed
21 Feb 2025, 16:03
Last Modified
Vulnerability information updated

Description

An issue was discovered in the Linux kernel before 5.8. lib/nlattr.c allows attackers to cause a denial of service (unbounded recursion) via a nested Netlink policy with a back reference.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.24%• Percentile: 15%

Techniques & Countermeasures

  • CWE-674•Uncontrolled Recursion

    The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Affected Systems

  • debian•linux

    < 5.8.7-1 | < 5.8.7-1 | < 5.8.7-1 | < 5.8.7-1

  • ubuntu•linux

    < 5.4.0-156.173

  • ubuntu•linux-aws

    < 5.4.0-1107.115

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1107.115~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-fips

    < 5.4.0-1107.115+fips1 | all

  • ubuntu•linux-azure

    all | < 5.4.0-1114.120

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1113.119~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fips

    < 5.4.0-1113.119+fips1 | all

  • ubuntu•linux-bluefield

    all | < 5.4.0-1068.74

  • ubuntu•linux-fips

    < 5.4.0-1082.91 | all

  • ubuntu•linux-gcp

    all | < 5.4.0-1110.119

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1110.119~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-fips

    < 5.4.0-1110.119+fips1 | all

  • ubuntu•linux-gke

    < 5.4.0-1105.112

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.4

    all

  • ubuntu•linux-gkeop

    < 5.4.0-1074.78

  • ubuntu•linux-gkeop-5.4

    all

  • ubuntu•linux-hwe

    all

  • ubuntu•linux-hwe-5.11

    all

  • ubuntu•linux-hwe-5.13

    all

  • ubuntu•linux-hwe-5.4

    < 5.4.0-156.173~18.04.1

  • ubuntu•linux-hwe-5.8

    all

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-ibm

    < 5.4.0-1054.59

  • ubuntu•linux-ibm-5.4

    < 5.4.0-1054.59~18.04.1

  • ubuntu•linux-intel-5.13

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-iot

    < 5.4.0-1019.20

  • ubuntu•linux-kvm

    < 5.4.0-1096.102

  • ubuntu•linux-oem

    all

  • ubuntu•linux-oem-5.10

    all

  • ubuntu•linux-oem-5.13

    all

  • ubuntu•linux-oem-5.14

    all

  • ubuntu•linux-oem-5.6

    all

Showing first 50 affected entries in server-rendered view.

References (12)