CVE-2021-47170
Vulnerability from cvelistv5
Published
2024-03-25 09:16
Modified
2024-11-04 12:00
Severity ?
Summary
USB: usbfs: Don't WARN about excessively large memory allocations
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:40.234Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47170",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:54:31.690189Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:33:51.941Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/core/devio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2ab21d6e1411",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "2c835fede13e",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "8d83f109e920",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "9f7cb3f01a10",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "4f2629ea67e7",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/core/devio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.193",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.124",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.9",
              "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\nUSB: usbfs: Don\u0027t WARN about excessively large memory allocations\n\nSyzbot found that the kernel generates a WARNing if the user tries to\nsubmit a bulk transfer through usbfs with a buffer that is way too\nlarge.  This isn\u0027t a bug in the kernel; it\u0027s merely an invalid request\nfrom the user and the usbfs code does handle it correctly.\n\nIn theory the same thing can happen with async transfers, or with the\npacket descriptor table for isochronous transfers.\n\nTo prevent the MM subsystem from complaining about these bad\nallocation requests, add the __GFP_NOWARN flag to the kmalloc calls\nfor these buffers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T12:00:46.330Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83"
        },
        {
          "url": "https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de"
        }
      ],
      "title": "USB: usbfs: Don\u0027t WARN about excessively large memory allocations",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47170",
    "datePublished": "2024-03-25T09:16:22.313Z",
    "dateReserved": "2024-03-25T09:12:14.111Z",
    "dateUpdated": "2024-11-04T12:00:46.330Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47170\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-25T10:15:08.870\",\"lastModified\":\"2024-03-25T13:47:14.087\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nUSB: usbfs: Don\u0027t WARN about excessively large memory allocations\\n\\nSyzbot found that the kernel generates a WARNing if the user tries to\\nsubmit a bulk transfer through usbfs with a buffer that is way too\\nlarge.  This isn\u0027t a bug in the kernel; it\u0027s merely an invalid request\\nfrom the user and the usbfs code does handle it correctly.\\n\\nIn theory the same thing can happen with async transfers, or with the\\npacket descriptor table for isochronous transfers.\\n\\nTo prevent the MM subsystem from complaining about these bad\\nallocation requests, add the __GFP_NOWARN flag to the kmalloc calls\\nfor these buffers.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: USB: usbfs: No ADVERTIR sobre asignaciones de memoria excesivamente grandes. Syzbot descubri\u00f3 que el kernel genera una ADVERTENCIA si el usuario intenta enviar una transferencia masiva a trav\u00e9s de usbfs con un b\u00fafer demasiado grande. Esto no es un error en el kernel; es simplemente una solicitud no v\u00e1lida del usuario y el c\u00f3digo usbfs la maneja correctamente. En teor\u00eda, lo mismo puede suceder con las transferencias as\u00edncronas o con la tabla de descriptores de paquetes para transferencias is\u00f3cronas. Para evitar que el subsistema MM se queje de estas solicitudes de asignaci\u00f3n incorrectas, agregue el indicador __GFP_NOWARN a las llamadas kmalloc para estos b\u00faferes.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098\",\"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.