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  1. CVEs
  2. CVE-2020-36311
  1. CVEs

CVE-2020-36311

medium
  • Information
  • CPEs
  • Plugins

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.

References

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https://www.debian.org/security/2021/dsa-4941

https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03

https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-23853

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

Details

Source: Mitre, NVD

Published: 2021-04-07

Updated: 2026-10-08

Risk Information

CVSS v2

Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Severity: Low

CVSS v3

Base Score: 5.5

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

Severity: Medium

EPSS

EPSS: 0.00335

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