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CVE-2020-36691

Date: March 24, 2023

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.

Severity Score

Related Resources (5)

https://nvd.nist.gov/vuln/detail/CVE-2020-36691
https://github.com/torvalds/linux/commit/7690aa1cdf7c4565ad6b013b324c28b685505e24
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-36691
https://www.mend.io/vulnerability-database/CVE-2020-36691

Severity Score

Weakness Type (CWE)

Uncontrolled Recursion

CWE-674

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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