CVE-2021-46967
Vulnerability from cvelistv5
Published
2024-02-27 18:47
Modified
2024-11-04 11:56
Severity ?
Summary
vhost-vdpa: fix vm_flags for virtqueue doorbell mapping
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/93dbbf20e3ffad14f04227a0b7105f6e6f0387ce
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/940230a5c31e2714722aee04c521a21f484b4df7
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-46967",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-02-27T19:32:37.039372Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:13:04.232Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:17:43.025Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/940230a5c31e2714722aee04c521a21f484b4df7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/93dbbf20e3ffad14f04227a0b7105f6e6f0387ce"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/vhost/vdpa.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3b8b6399666a",
              "status": "affected",
              "version": "ddd89d0a059d",
              "versionType": "git"
            },
            {
              "lessThan": "940230a5c31e",
              "status": "affected",
              "version": "ddd89d0a059d",
              "versionType": "git"
            },
            {
              "lessThan": "93dbbf20e3ff",
              "status": "affected",
              "version": "ddd89d0a059d",
              "versionType": "git"
            },
            {
              "lessThan": "3a3e0fad16d4",
              "status": "affected",
              "version": "ddd89d0a059d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/vhost/vdpa.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.11.*",
              "status": "unaffected",
              "version": "5.11.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost-vdpa: fix vm_flags for virtqueue doorbell mapping\n\nThe virtqueue doorbell is usually implemented via registeres but we\ndon\u0027t provide the necessary vma-\u003eflags like VM_PFNMAP. This may cause\nseveral issues e.g when userspace tries to map the doorbell via vhost\nIOTLB, kernel may panic due to the page is not backed by page\nstructure. This patch fixes this by setting the necessary\nvm_flags. With this patch, try to map doorbell via IOTLB will fail\nwith bad address."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T11:56:49.945Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/940230a5c31e2714722aee04c521a21f484b4df7"
        },
        {
          "url": "https://git.kernel.org/stable/c/93dbbf20e3ffad14f04227a0b7105f6e6f0387ce"
        },
        {
          "url": "https://git.kernel.org/stable/c/3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44"
        }
      ],
      "title": "vhost-vdpa: fix vm_flags for virtqueue doorbell mapping",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-46967",
    "datePublished": "2024-02-27T18:47:04.253Z",
    "dateReserved": "2024-02-27T18:42:55.943Z",
    "dateUpdated": "2024-11-04T11:56:49.945Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-46967\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-27T19:04:07.170\",\"lastModified\":\"2024-02-28T14:06:45.783\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nvhost-vdpa: fix vm_flags for virtqueue doorbell mapping\\n\\nThe virtqueue doorbell is usually implemented via registeres but we\\ndon\u0027t provide the necessary vma-\u003eflags like VM_PFNMAP. This may cause\\nseveral issues e.g when userspace tries to map the doorbell via vhost\\nIOTLB, kernel may panic due to the page is not backed by page\\nstructure. This patch fixes this by setting the necessary\\nvm_flags. With this patch, try to map doorbell via IOTLB will fail\\nwith bad address.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: vhost-vdpa: corrige vm_flags para el mapeo del timbre virtqueue El timbre virtqueue generalmente se implementa a trav\u00e9s de registros, pero no proporcionamos los vma-\u0026gt;flags necesarios como VM_PFNMAP. Esto puede causar varios problemas, por ejemplo, cuando el espacio de usuario intenta asignar el timbre a trav\u00e9s de vhost IOTLB, el kernel puede entrar en p\u00e1nico debido a que la p\u00e1gina no est\u00e1 respaldada por la estructura de la p\u00e1gina. Este parche soluciona este problema configurando los vm_flags necesarios. Con este parche, intentar asignar el timbre a trav\u00e9s de IOTLB fallar\u00e1 con una direcci\u00f3n incorrecta.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/93dbbf20e3ffad14f04227a0b7105f6e6f0387ce\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/940230a5c31e2714722aee04c521a21f484b4df7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.