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CVE-2026-31591Patch(linux / linux_kernel)

LOWCVSS 5.5 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch linux linux_kernel systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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).

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0.5/ 10 priority

Sources & remediation

Patch / fix

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • linux_kernel

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 2 signals
  • 2 total mentions across 1 day

Affected systems

Vendors
linux
Products
linux_kernel

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-24: 2Patch / Workaround · 2026-04-24: 2Technical Details · 2026-04-24: 204-24
Signal classification1 categories
Patch
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Patch

    🚨*CVE* CVE-2026-31591 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 synch… https://www.cve.org/CVERecord?id=CVE-2026-31591 ----- Traducción: CVE-2026-31591 En … http://infoflow.cloud`

    Post summary

    CVE‑2026‑31591, a Linux kernel flaw affecting KVM SEV, is reported as resolved with no PoC, exploit, or active exploitation evidence.

    0000042
    72 followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-31591 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 synch… https://www.cve.org/CVERecord?id=CVE-2026-31591

    Post summary

    CVE‑2026‑31591, a kernel KVM issue, has been fixed by locking all vCPUs during VMSA synchronization for SNP launch, with the patch already resolved.

    00000129
    57.2K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---

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