FKIE_CVE-2025-40065

Vulnerability from fkie_nvd - Published: 2025-10-28 12:15 - Updated: 2026-10-21 13:18
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2b351e3d04be9e1533f26c3464f1e44a5beace30
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5cba8ae00279296a586d0596443109d601b1d116
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b6e327736db013b9e385c3f6f9f0b04ddf26e43
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d00b61cd37f4c183ce0edbc9f8ccf6d5430ea357
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/riscv/kvm/vmid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8b6e327736db013b9e385c3f6f9f0b04ddf26e43",
              "status": "affected",
              "version": "fd7bb4a251dfc1da3496bf59a4793937c13e8c1f",
              "versionType": "git"
            },
            {
              "lessThan": "5cba8ae00279296a586d0596443109d601b1d116",
              "status": "affected",
              "version": "fd7bb4a251dfc1da3496bf59a4793937c13e8c1f",
              "versionType": "git"
            },
            {
              "lessThan": "d00b61cd37f4c183ce0edbc9f8ccf6d5430ea357",
              "status": "affected",
              "version": "fd7bb4a251dfc1da3496bf59a4793937c13e8c1f",
              "versionType": "git"
            },
            {
              "lessThan": "2b351e3d04be9e1533f26c3464f1e44a5beace30",
              "status": "affected",
              "version": "fd7bb4a251dfc1da3496bf59a4793937c13e8c1f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/riscv/kvm/vmid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRISC-V: KVM: Write hgatp register with valid mode bits\n\nAccording to the RISC-V Privileged Architecture Spec, when MODE=Bare\nis selected,software must write zero to the remaining fields of hgatp.\n\nWe have detected the valid mode supported by the HW before, So using a\nvalid mode to detect how many vmid bits are supported."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nRISC-V: KVM: Escribir el registro hgatp con bits de modo v\u00e1lidos\n\nSeg\u00fan la Especificaci\u00f3n de Arquitectura Privilegiada de RISC-V, cuando se selecciona MODE=Bare, el software debe escribir cero en los campos restantes de hgatp.\n\nHemos detectado previamente el modo v\u00e1lido soportado por el hardware, por lo tanto, usando un modo v\u00e1lido para detectar cu\u00e1ntos bits vmid son soportados."
    }
  ],
  "id": "CVE-2025-40065",
  "lastModified": "2026-10-21T13:18:18.500",
  "metrics": {},
  "published": "2025-10-28T12:15:40.950",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2b351e3d04be9e1533f26c3464f1e44a5beace30"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5cba8ae00279296a586d0596443109d601b1d116"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8b6e327736db013b9e385c3f6f9f0b04ddf26e43"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d00b61cd37f4c183ce0edbc9f8ccf6d5430ea357"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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