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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 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).
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:92bc8b025f15ea57621894b091f6a180ab6c05f4ea8d23eb0b3cd58dbde5d8b0
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"30fd9d8c82087742168db779929d8be0459b0716","status":"affected","version":"ad27ce155566f2b4400fa865859834592bd18777","versionType":"git"},{"lessThan":"4df77742e8b9a6b935bdf46f02fd0aca4d4ee7f5","status":"affected","version":"ad27ce155566f2b4400fa865859834592bd18777","versionType":"git"},{"lessThan":"c87938fc7d99a06a7e5477c45b4e5a4148f85d66","status":"affected","version":"ad27ce155566f2b4400fa86…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3b4ffb99ecf6c361ab817eb65a7ae6bff303b327c0046c071e4b3b2bdabd643e · sha256:42eb538b50d988fe… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.24","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.14","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.1","versionType":"semver"},{"lessThanOr…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3b4ffb99ecf6c361ab817eb65a7ae6bff303b327c0046c071e4b3b2bdabd643e · sha256:42eb538b50d988fe… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"30fd9d8c82087742168db779929d8be0459b0716","status":"affected","version":"ad27ce155566f2b4400fa865859834592bd18777","versionType":"git"},{"lessThan":"4df77742e8b9a6b935bdf46f02fd0aca4d4ee7f5","status":"affected","version":"ad27ce155566f2b4400fa865859834592bd18777","versionType":"git"},{"lessThan":"c87938fc7d99a06a7e5477c45b4e5a4148f85d66","status":"affected","version":"ad27ce155566f2b4400fa86…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3b4ffb99ecf6c361ab817eb65a7ae6bff303b327c0046c071e4b3b2bdabd643e · sha256:42eb538b50d988fe… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.24","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.14","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.1","versionType":"semver"},{"lessThanOr…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3b4ffb99ecf6c361ab817eb65a7ae6bff303b327c0046c071e4b3b2bdabd643e · sha256:42eb538b50d988fe… · /containers/cna/affected/1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/30fd9d8c82087742168db779929d8be0459b0716"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3b4ffb99ecf6c361ab817eb65a7ae6bff303b327c0046c071e4b3b2bdabd643e · sha256:42eb538b50d988fe… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/4df77742e8b9a6b935bdf46f02fd0aca4d4ee7f5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3b4ffb99ecf6c361ab817eb65a7ae6bff303b327c0046c071e4b3b2bdabd643e · sha256:42eb538b50d988fe… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/c87938fc7d99a06a7e5477c45b4e5a4148f85d66"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3b4ffb99ecf6c361ab817eb65a7ae6bff303b327c0046c071e4b3b2bdabd643e · sha256:42eb538b50d988fe… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/cb923ee6a80f4e604e6242a4702b59251e61a380"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3b4ffb99ecf6c361ab817eb65a7ae6bff303b327c0046c071e4b3b2bdabd643e · sha256:42eb538b50d988fe… · /containers/cna/references/3

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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