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CVE-2026-64285

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Pin source page for write when adding CPUID data for SNP guest When populating a guest_memfd instance with the initial CPUID data for an SNP guest, acquire a writable pin on the source page as KVM will write back the "correct" CPUID information if the userspace provided data is rejected by trusted firmware. Because KVM writes to the source page using a kernel mapping, pinning for read could result in KVM clobbering
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a85b84d9ec85c58c9aa0edf007c5937f6024c2180f9dfa8802c84e1070d64418
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":"affected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c","arch/x86/kvm/vmx/tdx.c","include/linux/kvm_host.h","virt/kvm/guest_memfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.0"},{"lessThan":"7.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cf1222bd37f25ad33c515b3355589d0928d01efbc2c5f7220c4813976e2f4821 · sha256:ad15f6f0000befe0… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c","arch/x86/kvm/vmx/tdx.c","include/linux/kvm_host.h","virt/kvm/guest_memfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"dcdb476f5fc5701ec06c23efe3e3529f07ca391e","status":"affected","version":"2a62345b30529e488beb6a1220577b3495933724","versionType":"git"},{"lessThan":"f13e900599089b10113ceb36013423f0837c6792","status":"affected","version":"2a62345b30529e488beb6a1220577b3495933724","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cf1222bd37f25ad33c515b3355589d0928d01efbc2c5f7220c4813976e2f4821 · sha256:ad15f6f0000befe0… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c","arch/x86/kvm/vmx/tdx.c","include/linux/kvm_host.h","virt/kvm/guest_memfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.0"},{"lessThan":"7.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cf1222bd37f25ad33c515b3355589d0928d01efbc2c5f7220c4813976e2f4821 · sha256:ad15f6f0000befe0… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c","arch/x86/kvm/vmx/tdx.c","include/linux/kvm_host.h","virt/kvm/guest_memfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"dcdb476f5fc5701ec06c23efe3e3529f07ca391e","status":"affected","version":"2a62345b30529e488beb6a1220577b3495933724","versionType":"git"},{"lessThan":"f13e900599089b10113ceb36013423f0837c6792","status":"affected","version":"2a62345b30529e488beb6a1220577b3495933724","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cf1222bd37f25ad33c515b3355589d0928d01efbc2c5f7220c4813976e2f4821 · sha256:ad15f6f0000befe0… · /containers/cna/affected/0

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/dcdb476f5fc5701ec06c23efe3e3529f07ca391e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cf1222bd37f25ad33c515b3355589d0928d01efbc2c5f7220c4813976e2f4821 · sha256:ad15f6f0000befe0… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/f13e900599089b10113ceb36013423f0837c6792"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cf1222bd37f25ad33c515b3355589d0928d01efbc2c5f7220c4813976e2f4821 · sha256:ad15f6f0000befe0… · /containers/cna/references/1

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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