GHSA-fvvw-8gw5-vw5f · Severity: medium — In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs...
In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as allowing userspace to manipulate and/or run a vCPU while its state is being synchronized would at best corrupt vCPU state, and at worst crash the host kernel. Opportunistically assert that vcpu->mutex is held when synchronizing its VMSA (the SEV-ES path already locks vCPUs).
Conclusion & alert: CVE-2026-31591 is rated Low Risk (4.1/100): low exploitation likelihood (EPSS 0.02%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-25 | — | 0.02% | — |
Full EPSS history (1 record total)
CVSS metrics for this CVE.
No CVSS data in dataset for this CVE.
GHSA-fvvw-8gw5-vw5f · Severity: medium — In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-31591 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2026-31591 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-31591 |
suse
|
high | — | https://www.suse.com/security/cve/CVE-2026-31591/ |
ubuntu
|
medium | CVE-2026-31591 medium priority: Ubuntu including 161 source packages (linux, linux-allwinner-5.19, …), 1449 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1048, ignored 169, not-affected 112, released 83, needed 32, needs-triage 4, pending 1. | https://ubuntu.com/security/CVE-2026-31591 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||