Vulnerability in Linux Kernel
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 9.0, 10.0
References
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9 (Release Notes, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2021/07/msg00015.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2021/dsa-4941 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-36311?
- CVE-2020-36311 is a medium-severity vulnerability in Linux Kernel. CVSS score: 5.5/10. Published 2021-04-07.
- How severe is CVE-2020-36311?
- Medium severity. CVSS v3 base score is 5.5 out of 10.