CVE-2020-36691
First published: Fri Mar 24 2023(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.8 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
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Reference Links
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8
- https://github.com/torvalds/linux/commit/7690aa1cdf7c4565ad6b013b324c28b685505e24
- https://launchpad.net/bugs/cve/CVE-2020-36691
- https://git.kernel.org/linus/7690aa1cdf7c4565ad6b013b324c28b685505e24
- https://security-tracker.debian.org/tracker/CVE-2020-36691
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36691
- https://nvd.nist.gov/vuln/detail/CVE-2020-36691
- https://ubuntu.com/security/CVE-2020-36691
Frequently Asked Questions
What is the severity of CVE-2020-36691?
CVE-2020-36691 is classified as a denial of service vulnerability due to unbounded recursion in the Linux kernel.
How do I fix CVE-2020-36691?
To fix CVE-2020-36691, upgrade the Linux kernel to version 5.10.223-1, 5.10.226-1, 6.1.119-1, 6.1.123-1, 6.12.11-1, or 6.12.12-1.
What versions of the Linux kernel are affected by CVE-2020-36691?
CVE-2020-36691 affects the Linux kernel versions before 5.8.
Can CVE-2020-36691 be exploited remotely?
Yes, CVE-2020-36691 can be exploited by attackers to cause a denial of service remotely.
Is CVE-2020-36691 specific to any Linux distributions?
CVE-2020-36691 is a vulnerability in the Linux kernel and can potentially affect all distributions using affected versions.
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