{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix OOB in nilfs_set_de_type\n\nThe size of the nilfs_type_by_mode array in the fs/nilfs2/dir.c file is\ndefined as \"S_IFMT >> S_SHIFT\", but the nilfs_set_de_type() function,\nwhich uses this array, specifies the index to read from the array in the\nsame way as \"(mode & S_IFMT) >> S_SHIFT\".\n\nstatic void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode\n *inode)\n{\n\tumode_t mode = inode->i_mode;\n\n\tde->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; // oob\n}\n\nHowever, when the index is determined this way, an out-of-bounds (OOB)\nerror occurs by referring to an index that is 1 larger than the array size\nwhen the condition \"mode & S_IFMT == S_IFMT\" is satisfied.  Therefore, a\npatch to resize the nilfs_type_by_mode array should be applied to prevent\nOOB errors."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/nilfs2/dir.c"
               ],
               "versions": [
                  {
                     "version": "2ba466d74ed7",
                     "lessThan": "054f29e9ca05",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ba466d74ed7",
                     "lessThan": "90f43980ea6b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ba466d74ed7",
                     "lessThan": "7061c7efbb9e",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ba466d74ed7",
                     "lessThan": "bdbe483da21f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ba466d74ed7",
                     "lessThan": "897ac5306bbe",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ba466d74ed7",
                     "lessThan": "2382eae66b19",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ba466d74ed7",
                     "lessThan": "90823f8d9ecc",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ba466d74ed7",
                     "lessThan": "c4a7dc9523b5",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/nilfs2/dir.c"
               ],
               "versions": [
                  {
                     "version": "2.6.30",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "2.6.30",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.313",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.275",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.216",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.157",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.88",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.29",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8.8",
                     "lessThanOrEqual": "6.8.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243"
            },
            {
               "url": "https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8"
            },
            {
               "url": "https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1"
            },
            {
               "url": "https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0"
            },
            {
               "url": "https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611"
            },
            {
               "url": "https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9"
            },
            {
               "url": "https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975f"
            },
            {
               "url": "https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16"
            }
         ],
         "title": "nilfs2: fix OOB in nilfs_set_de_type",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-26981",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}