CVE-2020-36311

Description

An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.10%

Vendor Advisory debian.org Vendor Advisory kernel.org Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03	patch vendor advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9	release notes vendor advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html	third party advisory mailing list
https://www.debian.org/security/2021/dsa-4941	third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-36311?: CVE-2020-36311 has been scored as a medium severity vulnerability.
How to fix CVE-2020-36311?: To fix CVE-2020-36311, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-36311 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2020-36311 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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