{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-26981",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-26981"
  ],
  "published": "2024-05-01T05:31:05Z",
  "summary": "nilfs2: fix OOB in nilfs_set_de_type",
  "details": "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.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-26981"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243"
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    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
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}