What is CVE-2026-31558?

CVE-2026-31558 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2026-04-24.

How severe is CVE-2026-31558?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Linux

CVE-2026-31558

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust kvm_get_vcpu_by_cpuid() takes a cpuid parameter whose type is int, so cpuid can be negative. Let kvm_get_vcpu_by…

EPSS: 0.000 (3.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Linux — versions 73516e9da512adc63ba3859fbd82a21f6257348f, 6.10, 0

References

git.kernel.org/stable/c/596c3f8069c4792f22fce8c4452f44410032d910
git.kernel.org/stable/c/878cf6acb4fd8ab4126cf9d369a5bb0e23123418
git.kernel.org/stable/c/47857b05bd50db01e211a1b6f513d57901cd3e6b
git.kernel.org/stable/c/2db06c15d8c7a0ccb6108524e16cd9163753f354

Frequently asked questions

What is CVE-2026-31558?: CVE-2026-31558 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2026-04-24.
How severe is CVE-2026-31558?: High severity. CVSS v3 base score is 8.8 out of 10.