cve-2021-47416
Vulnerability from cvelistv5
Published
2024-05-21 15:04
Modified
2024-08-04 05:39
Severity
Summary
phy: mdio: fix memory leak
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974f3a4f4d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ca6e11c337daf7925ff8a2aac8e84490a8691905
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47416",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-21T17:32:44.904318Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:15:14.542Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:39:59.091Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974f3a4f4d"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/ca6e11c337daf7925ff8a2aac8e84490a8691905"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/phy/mdio_bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "25e9f88c7e3c",
              "status": "affected",
              "version": "46abc02175b3",
              "versionType": "git"
            },
            {
              "lessThan": "2250392d930b",
              "status": "affected",
              "version": "46abc02175b3",
              "versionType": "git"
            },
            {
              "lessThan": "f4f502a04ee1",
              "status": "affected",
              "version": "46abc02175b3",
              "versionType": "git"
            },
            {
              "lessThan": "2397b9e11872",
              "status": "affected",
              "version": "46abc02175b3",
              "versionType": "git"
            },
            {
              "lessThan": "414bb4ead136",
              "status": "affected",
              "version": "46abc02175b3",
              "versionType": "git"
            },
            {
              "lessThan": "0d2dd40a7be6",
              "status": "affected",
              "version": "46abc02175b3",
              "versionType": "git"
            },
            {
              "lessThan": "064c2616234a",
              "status": "affected",
              "version": "46abc02175b3",
              "versionType": "git"
            },
            {
              "lessThan": "ca6e11c337da",
              "status": "affected",
              "version": "46abc02175b3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/phy/mdio_bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.28"
            },
            {
              "lessThan": "2.6.28",
              "status": "unaffected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.289",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.287",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.251",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.211",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.153",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.73",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.14.*",
              "status": "unaffected",
              "version": "5.14.12",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: mdio: fix memory leak\n\nSyzbot reported memory leak in MDIO bus interface, the problem was in\nwrong state logic.\n\nMDIOBUS_ALLOCATED indicates 2 states:\n\t1. Bus is only allocated\n\t2. Bus allocated and __mdiobus_register() fails, but\n\t   device_register() was called\n\nIn case of device_register() has been called we should call put_device()\nto correctly free the memory allocated for this device, but mdiobus_free()\ncalls just kfree(dev) in case of MDIOBUS_ALLOCATED state\n\nTo avoid this behaviour we need to set bus-\u003estate to MDIOBUS_UNREGISTERED\n_before_ calling device_register(), because put_device() should be\ncalled even in case of device_register() failure."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-29T05:07:33.622Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639"
        },
        {
          "url": "https://git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f"
        },
        {
          "url": "https://git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988"
        },
        {
          "url": "https://git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a"
        },
        {
          "url": "https://git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974f3a4f4d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca6e11c337daf7925ff8a2aac8e84490a8691905"
        }
      ],
      "title": "phy: mdio: fix memory leak",
      "x_generator": {
        "engine": "bippy-a5840b7849dd"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47416",
    "datePublished": "2024-05-21T15:04:06.042Z",
    "dateReserved": "2024-05-21T14:58:30.818Z",
    "dateUpdated": "2024-08-04T05:39:59.091Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47416\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-21T15:15:27.083\",\"lastModified\":\"2024-05-21T16:53:56.550\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nphy: mdio: fix memory leak\\n\\nSyzbot reported memory leak in MDIO bus interface, the problem was in\\nwrong state logic.\\n\\nMDIOBUS_ALLOCATED indicates 2 states:\\n\\t1. Bus is only allocated\\n\\t2. Bus allocated and __mdiobus_register() fails, but\\n\\t   device_register() was called\\n\\nIn case of device_register() has been called we should call put_device()\\nto correctly free the memory allocated for this device, but mdiobus_free()\\ncalls just kfree(dev) in case of MDIOBUS_ALLOCATED state\\n\\nTo avoid this behaviour we need to set bus-\u003estate to MDIOBUS_UNREGISTERED\\n_before_ calling device_register(), because put_device() should be\\ncalled even in case of device_register() failure.\"},{\"lang\":\"es\",\"value\":\" En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: phy: mdio: arreglar p\u00e9rdida de memoria. Syzbot inform\u00f3 una p\u00e9rdida de memoria en la interfaz del bus MDIO, el problema estaba en una l\u00f3gica de estado incorrecta. MDIOBUS_ALLOCATED indica 2 estados: 1. El bus solo est\u00e1 asignado 2. El bus asignado y __mdiobus_register() falla, pero se llam\u00f3 a device_register() En caso de que se haya llamado a device_register() debemos llamar a put_device() para liberar correctamente la memoria asignada para esto dispositivo, pero mdiobus_free() llama solo a kfree(dev) en caso de estado MDIOBUS_ALLOCATED. Para evitar este comportamiento, necesitamos configurar bus-\u0026gt;state en MDIOBUS_UNREGISTERED _antes_ de llamar a device_register(), porque put_device() debe llamarse incluso en caso de fallo de device_register( .\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974f3a4f4d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ca6e11c337daf7925ff8a2aac8e84490a8691905\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.