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CVE-2026-46071

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12 svm_copy_lbrs() always marks VMCB_LBR dirty in the destination VMCB. However, nested_svm_vmexit() uses it to copy LBRs to vmcb12, and clearing clean bits in vmcb12 is not architecturally defined. Move vmcb_mark_dirty() to callers and drop it for vmcb12. This also facilitates incoming refactoring that does not pass the entire VMCB to svm_copy_lbrs().
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5ab99cce2d2a4239f4aedf008cbe729acc213926fdfba6334ee70b6a44a1c01e
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/nested.c","arch/x86/kvm/svm/svm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a3f0981a5a0e0bd51ad74cc7d9eed32294b24002","status":"affected","version":"d20c796ca3709801f8a7fa36e8770a3dd8ebd34e","versionType":"git"},{"lessThan":"9efe23568806d1cd06f7d146f9b3037b8d585a9f","status":"affected","version":"d20c796ca3709801f8a7fa36e8770a3dd8ebd34e","versionType":"git"},{"lessThan":"b53ab5167a81537777ac780bbd93d32613aa3bda","status":"affected","versi…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4f65802d897b6e48a0fb971bed54da5b8bee7934ea4d32cbbd452bffb702a816 · sha256:78ee19c604473aff… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kvm/svm/nested.c","arch/x86/kvm/svm/svm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.19"},{"lessThan":"5.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"or…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4f65802d897b6e48a0fb971bed54da5b8bee7934ea4d32cbbd452bffb702a816 · sha256:78ee19c604473aff… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kvm/svm/nested.c","arch/x86/kvm/svm/svm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a3f0981a5a0e0bd51ad74cc7d9eed32294b24002","status":"affected","version":"d20c796ca3709801f8a7fa36e8770a3dd8ebd34e","versionType":"git"},{"lessThan":"9efe23568806d1cd06f7d146f9b3037b8d585a9f","status":"affected","version":"d20c796ca3709801f8a7fa36e8770a3dd8ebd34e","versionType":"git"},{"lessThan":"b53ab5167a81537777ac780bbd93d32613aa3bda","status":"affected","versi…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4f65802d897b6e48a0fb971bed54da5b8bee7934ea4d32cbbd452bffb702a816 · sha256:78ee19c604473aff… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kvm/svm/nested.c","arch/x86/kvm/svm/svm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.19"},{"lessThan":"5.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"or…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4f65802d897b6e48a0fb971bed54da5b8bee7934ea4d32cbbd452bffb702a816 · sha256:78ee19c604473aff… · /containers/cna/affected/1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/9efe23568806d1cd06f7d146f9b3037b8d585a9f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4f65802d897b6e48a0fb971bed54da5b8bee7934ea4d32cbbd452bffb702a816 · sha256:78ee19c604473aff… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/a3f0981a5a0e0bd51ad74cc7d9eed32294b24002"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4f65802d897b6e48a0fb971bed54da5b8bee7934ea4d32cbbd452bffb702a816 · sha256:78ee19c604473aff… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/b53ab5167a81537777ac780bbd93d32613aa3bda"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4f65802d897b6e48a0fb971bed54da5b8bee7934ea4d32cbbd452bffb702a816 · sha256:78ee19c604473aff… · /containers/cna/references/2

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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