{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix check to prevent false positive report of incorrect used inodes\n\nCommit <50122847007> (\"ext4: fix check to prevent initializing reserved\ninodes\") check the block group zero and prevent initializing reserved\ninodes. But in some special cases, the reserved inode may not all belong\nto the group zero, it may exist into the second group if we format\nfilesystem below.\n\n  mkfs.ext4 -b 4096 -g 8192 -N 1024 -I 4096 /dev/sda\n\nSo, it will end up triggering a false positive report of a corrupted\nfile system. This patch fix it by avoid check reserved inodes if no free\ninode blocks will be zeroed."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "7736fcede789",
                     "lessThan": "539ba4ebc467",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "954e572ae2f2",
                     "lessThan": "d2e121be8d31",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f547aa20b4f6",
                     "lessThan": "e70db6e43286",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "50122847007",
                     "lessThan": "7687f5aba0f5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "50122847007",
                     "lessThan": "9c61387630a5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "50122847007",
                     "lessThan": "098b257563b9",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "50122847007",
                     "lessThan": "f42789ee5f96",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "50122847007",
                     "lessThan": "e18d76a12b34",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "50122847007",
                     "lessThan": "a149d2a5cabb",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "4.4.269",
                     "lessThanOrEqual": "4.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.9.269",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.233",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.191",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.118",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.36",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.11.20",
                     "lessThanOrEqual": "5.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12.3",
                     "lessThanOrEqual": "5.12.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.13",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/539ba4ebc467260225898e67ea53cbb73308f894"
            },
            {
               "url": "https://git.kernel.org/stable/c/d2e121be8d318524a61e13ca15b5bfab2d0b63c7"
            },
            {
               "url": "https://git.kernel.org/stable/c/e70db6e43286a17c3dfc840fcee662de183b6a81"
            },
            {
               "url": "https://git.kernel.org/stable/c/7687f5aba0f50c7ff8040e506bae184e59c8e7b8"
            },
            {
               "url": "https://git.kernel.org/stable/c/9c61387630a54e35b96a90608aafd369ffb86f39"
            },
            {
               "url": "https://git.kernel.org/stable/c/098b257563b959f4ca6c1d82fde0ee727792cb19"
            },
            {
               "url": "https://git.kernel.org/stable/c/f42789ee5f96743cdb5f69445cab3609458733f7"
            },
            {
               "url": "https://git.kernel.org/stable/c/e18d76a12b34791bc0318a0e0c0fa5863cd8dabf"
            },
            {
               "url": "https://git.kernel.org/stable/c/a149d2a5cabbf6507a7832a1c4fd2593c55fd450"
            }
         ],
         "title": "ext4: fix check to prevent false positive report of incorrect used inodes",
         "x_generator": {
            "engine": "bippy-c298863b1525"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-46946",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}