What’s Vulnerable › Vulnerabilities

CVE-2020-36313

• Severity: high (CVSS 7.8 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-416

Description

An issue was discovered in the Linux kernel before 5.7. The KVM subsystem allows out-of-range access to memslots after a deletion, aka CID-0774a964ef56. This affects arch/s390/kvm/kvm-s390.c, include/linux/kvm_host.h, and virt/kvm/kvm_main.c.

Affected products

• Linux kernel: before 5.7 — fixed in 5.7

How to fix

Upgrade to a fixed version: Linux kernel 5.7. Check the vendor advisory for mitigations.

References

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0774a964ef561b7170d8d1b1bfe6f88002b6d219
• https://security.netapp.com/advisory/ntap-20210604-0005/
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0774a964ef561b7170d8d1b1bfe6f88002b6d219
• https://security.netapp.com/advisory/ntap-20210604-0005/

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