{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\n\nCommit de144ff4234f changes _pnfs_return_layout() to call\npnfs_mark_matching_lsegs_return() passing NULL as the struct\npnfs_layout_range argument. Unfortunately,\npnfs_mark_matching_lsegs_return() doesn't check if we have a value here\nbefore dereferencing it, causing an oops.\n\nI'm able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/nfs/pnfs.c"
               ],
               "versions": [
                  {
                     "version": "80e34f4957ec",
                     "lessThan": "4e1ba532dbc1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "7b7b97746432",
                     "lessThan": "42637ca25c7d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9ffa7967f937",
                     "lessThan": "39785761fead",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "6be0e4b59314",
                     "lessThan": "aba3c7795f51",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2fafe7d5047f",
                     "lessThan": "f9890652185b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "7e65ea887d0c",
                     "lessThan": "b090d110e666",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "de144ff4234f",
                     "lessThan": "a421d218603f",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/nfs/pnfs.c"
               ],
               "versions": [
                  {
                     "version": "4.9.269",
                     "lessThan": "4.9.271",
                     "status": "affected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.233",
                     "lessThan": "4.14.235",
                     "status": "affected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.191",
                     "lessThan": "4.19.193",
                     "status": "affected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.118",
                     "lessThan": "5.4.124",
                     "status": "affected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.36",
                     "lessThan": "5.10.42",
                     "status": "affected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12.3",
                     "lessThan": "5.12.9",
                     "status": "affected",
                     "versionType": "custom"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42"
            },
            {
               "url": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48"
            },
            {
               "url": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494"
            },
            {
               "url": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb"
            },
            {
               "url": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53"
            },
            {
               "url": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a"
            },
            {
               "url": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb"
            }
         ],
         "title": "NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-47179",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}