CVE-2026-31591 Affecting kernel-livepatch-6_4_0-150700_7_59-rt package, versions <1-150700.1.5.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-SLES157-KERNELLIVEPATCH640150700759RT-17436504
  • published24 Jun 2026
  • disclosed23 Jun 2026

Introduced: 23 Jun 2026

NewCVE-2026-31591  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kernel-livepatch-6_4_0-150700_7_59-rt to version 1-150700.1.5.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-6_4_0-150700_7_59-rt package and not the kernel-livepatch-6_4_0-150700_7_59-rt package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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).

CVSS Base Scores

version 3.1