{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "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->state to MDIOBUS_UNREGISTERED\n_before_ calling device_register(), because put_device() should be\ncalled even in case of device_register() failure."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/phy/mdio_bus.c"
               ],
               "versions": [
                  {
                     "version": "46abc02175b3",
                     "lessThan": "25e9f88c7e3c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "46abc02175b3",
                     "lessThan": "2250392d930b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "46abc02175b3",
                     "lessThan": "f4f502a04ee1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "46abc02175b3",
                     "lessThan": "2397b9e11872",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "46abc02175b3",
                     "lessThan": "414bb4ead136",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "46abc02175b3",
                     "lessThan": "0d2dd40a7be6",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "46abc02175b3",
                     "lessThan": "064c2616234a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "46abc02175b3",
                     "lessThan": "ca6e11c337da",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/phy/mdio_bus.c"
               ],
               "versions": [
                  {
                     "version": "2.6.28",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "2.6.28",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.4.289",
                     "lessThanOrEqual": "4.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.9.287",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.251",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.211",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.153",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.73",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.14.12",
                     "lessThanOrEqual": "5.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "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": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-47416",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}