CVE-2026-31591
KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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).
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 24, 2026 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
ad27ce155566f2b4400fa865859834592bd18777 < 30fd9d8c82087742168db779929d8be0459b0716 ad27ce155566f2b4400fa865859834592bd18777 < 4df77742e8b9a6b935bdf46f02fd0aca4d4ee7f5 ad27ce155566f2b4400fa865859834592bd18777 < c87938fc7d99a06a7e5477c45b4e5a4148f85d66 ad27ce155566f2b4400fa865859834592bd18777 < cb923ee6a80f4e604e6242a4702b59251e61a380
Linux / Linux
6.11
References
git.kernel.org: https://git.kernel.org/stable/c/30fd9d8c82087742168db779929d8be0459b0716 git.kernel.org: https://git.kernel.org/stable/c/4df77742e8b9a6b935bdf46f02fd0aca4d4ee7f5 git.kernel.org: https://git.kernel.org/stable/c/c87938fc7d99a06a7e5477c45b4e5a4148f85d66 git.kernel.org: https://git.kernel.org/stable/c/cb923ee6a80f4e604e6242a4702b59251e61a380