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CVE-2026-23402

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. only to MMUs without shadowed gPTEs. While it's impossible for KVM to overwrite a shadow-present SPTE in response to a guest write, writes from outside the scope of KVM, e.g. from host userspace, aren't
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5043d7cba6dee9c7b41fab01420772039bd60ebfc99f19431271ad52021b0348
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/mmu/mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9c3d2f5d4340843df716458246ec22d6dd34d479510daae1c8b8f2889b6e9287 · sha256:e79ff1e6ae68c4af… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kvm/mmu/mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bab090e8fd5607f77379ea78b9d0c683cb1538a9","status":"affected","version":"11d45175111d933c5175acc28e56af2213dd5cd6","versionType":"git"},{"lessThan":"a1e0f7150639bc30a8e75476d1c7daab77d44992","status":"affected","version":"11d45175111d933c5175acc28e56af2213dd5cd6","versionType":"git"},{"lessThan":"df83746075778958954aa0460cca55f4b3fc9c02","status":"affected","version":"11d45175111d933c5175acc…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9c3d2f5d4340843df716458246ec22d6dd34d479510daae1c8b8f2889b6e9287 · sha256:e79ff1e6ae68c4af… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kvm/mmu/mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9c3d2f5d4340843df716458246ec22d6dd34d479510daae1c8b8f2889b6e9287 · sha256:e79ff1e6ae68c4af… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kvm/mmu/mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bab090e8fd5607f77379ea78b9d0c683cb1538a9","status":"affected","version":"11d45175111d933c5175acc28e56af2213dd5cd6","versionType":"git"},{"lessThan":"a1e0f7150639bc30a8e75476d1c7daab77d44992","status":"affected","version":"11d45175111d933c5175acc28e56af2213dd5cd6","versionType":"git"},{"lessThan":"df83746075778958954aa0460cca55f4b3fc9c02","status":"affected","version":"11d45175111d933c5175acc…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9c3d2f5d4340843df716458246ec22d6dd34d479510daae1c8b8f2889b6e9287 · sha256:e79ff1e6ae68c4af… · /containers/cna/affected/0

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/a1e0f7150639bc30a8e75476d1c7daab77d44992"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9c3d2f5d4340843df716458246ec22d6dd34d479510daae1c8b8f2889b6e9287 · sha256:e79ff1e6ae68c4af… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/bab090e8fd5607f77379ea78b9d0c683cb1538a9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9c3d2f5d4340843df716458246ec22d6dd34d479510daae1c8b8f2889b6e9287 · sha256:e79ff1e6ae68c4af… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/df83746075778958954aa0460cca55f4b3fc9c02"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9c3d2f5d4340843df716458246ec22d6dd34d479510daae1c8b8f2889b6e9287 · sha256:e79ff1e6ae68c4af… · /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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