CVE-2025-40065 (GCVE-0-2025-40065)

Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2025-12-01 06:17
VLAI?
Title
RISC-V: KVM: Write hgatp register with valid mode bits
Summary
In the Linux kernel, the following vulnerability has been resolved: RISC-V: KVM: Write hgatp register with valid mode bits According to the RISC-V Privileged Architecture Spec, when MODE=Bare is selected,software must write zero to the remaining fields of hgatp. We have detected the valid mode supported by the HW before, So using a valid mode to detect how many vmid bits are supported.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: fd7bb4a251dfc1da3496bf59a4793937c13e8c1f , < d00b61cd37f4c183ce0edbc9f8ccf6d5430ea357 (git)
Affected: fd7bb4a251dfc1da3496bf59a4793937c13e8c1f , < 2b351e3d04be9e1533f26c3464f1e44a5beace30 (git)
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    Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "arch/riscv/kvm/vmid.c"
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        }
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      "providerMetadata": {
        "dateUpdated": "2025-12-01T06:17:15.902Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40065",
    "datePublished": "2025-10-28T11:48:35.785Z",
    "dateReserved": "2025-04-16T07:20:57.159Z",
    "dateUpdated": "2025-12-01T06:17:15.902Z",
    "state": "PUBLISHED"
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  }
}


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  • 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.
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  • 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.



Detection rules are retrieved from Rulezet.