CVE-2020-36311
Linux Kernel KVM SVM SEV Denial of Service
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.
INFO
Published Date :
April 7, 2021, 12:15 a.m.
Last Modified :
May 3, 2022, 1:05 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-36311
.
URL | Resource |
---|---|
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9 | Release Notes Vendor Advisory |
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03 | Patch Vendor Advisory |
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html | Mailing List Third Party Advisory |
https://www.debian.org/security/2021/dsa-4941 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-36311
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-36311
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
May. 03, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4941 No Types Assigned https://www.debian.org/security/2021/dsa-4941 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4941 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 20, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html [No Types Assigned] -
Initial Analysis by [email protected]
Apr. 13, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9 Release Notes, Vendor Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03 Patch, Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.9.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-36311
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-36311
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.05635
percentile