Vulnerability Details : CVE-2020-36311
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.
Vulnerability category: Denial of service
Products affected by CVE-2020-36311
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-36311
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-36311
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
References for CVE-2020-36311
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://www.debian.org/security/2021/dsa-4941
Debian -- Security Information -- DSA-4941-1 linuxThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html
[SECURITY] [DLA 2714-1] linux-4.19 security updateMailing List;Third Party Advisory
-
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9
Release Notes;Vendor Advisory
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