CVE-2026-31591None▾ SunlitIn 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 …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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).
Linux >= ad27ce155566f2b4400fa865859834592bd18777 < 30fd9d8c82087742168db779929d8be0459b0716Linux >= ad27ce155566f2b4400fa865859834592bd18777 < 4df77742e8b9a6b935bdf46f02fd0aca4d4ee7f5Linux >= ad27ce155566f2b4400fa865859834592bd18777 < c87938fc7d99a06a7e5477c45b4e5a4148f85d66Linux >= ad27ce155566f2b4400fa865859834592bd18777 < cb923ee6a80f4e604e6242a4702b59251e61a380Linux 6.11Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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