What is CVE-2020-36311?

CVE-2020-36311 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2020-36311 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2020-36311?

CVE-2020-36311 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2020-36311?

No patch is currently available for CVE-2020-36311. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2020-36311 actively exploited?

CVE-2020-36311 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2020-36311

Medium

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.

Package Linux Kernel

Published 2021-04-07

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

The following references provide additional information about CVE-2020-36311 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9

Release Notes Vendor Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html

Mailing List Third Party Advisory
Debian Security
https://www.debian.org/security/2021/dsa-4941

Third Party Advisory
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03
Patch

Details

CVE ID CVE-2020-36311

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2021-04-07

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2020-36311?

CVE-2020-36311 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2020-36311 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2020-36311?

CVE-2020-36311 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2020-36311?

No patch is currently available for CVE-2020-36311. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2020-36311 actively exploited?

No — CVE-2020-36311 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.