CVE-2020-36691 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00013.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Linux	Linux Kernel

Configuration 1 [-]

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2020-24133	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.
Ubuntu USN	USN-6284-1	Linux kernel vulnerabilities
Ubuntu USN	USN-6301-1	Linux kernel vulnerabilities
Ubuntu USN	USN-6312-1	Linux kernel vulnerabilities
Ubuntu USN	USN-6314-1	Linux kernel vulnerabilities
Ubuntu USN	USN-6331-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-6337-1	Linux kernel (Azure) vulnerabilities

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8
https://github.com/torvalds/linux/commit/7690aa1cdf7c4565ad6b013b324c28b685505e24
https://nvd.nist.gov/vuln/detail/CVE-2020-36691
https://www.cve.org/CVERecord?id=CVE-2020-36691

History

Fri, 21 Feb 2025 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-03-24T00:00:00.000Z

Updated: 2025-02-21T16:03:42.066Z

Reserved: 2023-03-24T00:00:00.000Z

Link: CVE-2020-36691

Vulnrichment

Updated: 2024-08-04T17:37:05.255Z

NVD

Status : Modified

Published: 2023-03-24T17:15:07.313

Modified: 2025-02-21T16:15:30.657

Link: CVE-2020-36691

Redhat

Severity : Moderate

Publid Date: 2020-04-30T00:00:00Z

Links: CVE-2020-36691 - Bugzilla

OpenCVE Enrichment

No data.

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