CVE-2020-36691

kernel: lib/nlattr.c allows attackers to cause a denial of service

Published Mar 24, 2023 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD 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 Ubuntu USN USN-6284-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6301-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6312-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6314-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6331-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-6337-1 Linux kernel (Azure) vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Feb 21, 2025, 4:03 PM
Reserved
Mar 24, 2023, 12:00 AM
Status
Modified
Published
Mar 24, 2023, 5:15 PM
Modified
Jun 17, 2026, 3:15 AM
Severity
Moderate
Public date
Apr 30, 2020, 12:00 AM