CVE-2026-46131 (GCVE-0-2026-46131)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:35 – Updated: 2026-06-14 17:56
VLAI
Title
KVM: x86: check for nEPT/nNPT in slow flush hypercalls
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking is_guest_mode(vcpu) is incorrect, because translate_nested_gpa() is only valid if an L2 guest is running *with nested EPT/NPT enabled*. Instead use the same condition as translate_nested_gpa() itself.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: aee738236dca0d0870789138ec494e15d6303566 , < 971f17f5d91045404e3914029ea57c3da90179a4 (git)
Affected: aee738236dca0d0870789138ec494e15d6303566 , < 45fc766bc756ff1d66f8ca026a9c4f7f764adfae (git)
Affected: aee738236dca0d0870789138ec494e15d6303566 , < d6f4e217d663ede5becc2fd6cb612c749677387b (git)
Affected: aee738236dca0d0870789138ec494e15d6303566 , < 4c7f8436b19a2a3acc0cb6b6e3becd6796ae5c57 (git)
Affected: aee738236dca0d0870789138ec494e15d6303566 , < 464af6fc2b1dcc74005b7f58ee3812b17777efee (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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