What is CVE-2020-36310?

CVE-2020-36310 is a medium-severity vulnerability in Linux Kernel, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.5/10. Published 2021-04-07.

How severe is CVE-2020-36310?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Linux Kernel

CVE-2020-36310

An issue was discovered in the Linux kernel before 5.8. arch/x86/kvm/svm/svm.c allows a set_memory_region_test infinite loop for certain nested page faults, aka CID-e72436bc3a52.

Published 2021-04-07 · last modified 2026-06-17.

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 (23.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.6% 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 11.0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Vendor Advisory)
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8 (Release Notes, Vendor Advisory)
www.debian.org/security/2022/dsa-5095 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2020-36310?: CVE-2020-36310 is a medium-severity vulnerability in Linux Kernel, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.5/10. Published 2021-04-07.
How severe is CVE-2020-36310?: Medium severity. CVSS v3 base score is 5.5 out of 10.