{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmcb: fix error handling in mcb_alloc_bus()\n\nThere are two bugs:\n1) If ida_simple_get() fails then this code calls put_device(carrier)\n   but we haven't yet called get_device(carrier) and probably that\n   leads to a use after free.\n2) After device_initialize() then we need to use put_device() to\n   release the bus.  This will free the internal resources tied to the\n   device and call mcb_free_bus() which will free the rest."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/mcb/mcb-core.c"
               ],
               "versions": [
                  {
                     "version": "5d9e2ab9fea4",
                     "lessThan": "8a558261fa57",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5d9e2ab9fea4",
                     "lessThan": "115b07d9f47e",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5d9e2ab9fea4",
                     "lessThan": "66f74ba9be9d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5d9e2ab9fea4",
                     "lessThan": "7751f609eadf",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5d9e2ab9fea4",
                     "lessThan": "91e4ad05bf18",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5d9e2ab9fea4",
                     "lessThan": "9fc198f415de",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5d9e2ab9fea4",
                     "lessThan": "25a143321648",
                     "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/mcb/mcb-core.c"
               ],
               "versions": [
                  {
                     "version": "4.7",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "4.7",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.9.285",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.249",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.209",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.150",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.70",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.14.9",
                     "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/8a558261fa57a6deefb0925ab1829f698b194aea"
            },
            {
               "url": "https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f"
            },
            {
               "url": "https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b"
            },
            {
               "url": "https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0"
            },
            {
               "url": "https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0"
            },
            {
               "url": "https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499"
            },
            {
               "url": "https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae"
            }
         ],
         "title": "mcb: fix error handling in mcb_alloc_bus()",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-47361",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}