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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-2714-1 linux-4.19 security update
Debian DSA Debian DSA DSA-4941-1 linux security update
EUVD EUVD EUVD-2020-23853 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.
Ubuntu USN Ubuntu USN USN-5071-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5071-2 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-5120-1 Linux kernel (Azure) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 08 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-10-08T21:03:27.604Z

Reserved: 2021-04-06T00:00:00.000Z

Link: CVE-2020-36311

cve-icon Vulnrichment

Updated: 2024-08-04T17:23:10.253Z

cve-icon NVD

Status : Modified

Published: 2021-04-07T00:15:13.150

Modified: 2026-10-08T21:17:29.923

Link: CVE-2020-36311

cve-icon Redhat

Severity : Low

Publid Date: 2020-09-11T00:00:00Z

Links: CVE-2020-36311 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses