CVE-2020-36310

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-07 · updated 2026-06-17
Weakness: CWE-835

Description

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.

Affected products

Debian Linux: 11.0
Linux kernel: before 5.8 — fixed in 5.8

How to fix

Upgrade to a fixed version: Linux kernel 5.8. Check the vendor advisory for mitigations.

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e72436bc3a5206f95bb384e741154166ddb3202e
https://www.debian.org/security/2022/dsa-5095
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e72436bc3a5206f95bb384e741154166ddb3202e
https://www.debian.org/security/2022/dsa-5095

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