{
  "cveId": "CVE-2025-40137",
  "url": "https://patchblox.com/security/cve/CVE-2025-40137",
  "summary": "CVE-2025-40137 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-40137, released November 12, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to truncate first page in error path o...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to truncate first page in error path of f2fs_truncate()  syzbot reports a bug as below:  loop0: detected capacity change from 0 to 40427 F2FS-fs (loop0): Wrong SSA boundary, start(3584) end(4096) blocks(3072) F2FS-fs (loop0): Can\u0027t find valid F2FS filesystem in 1th superblock F2FS-fs (loop0): invalid crc value F2FS-fs (loop0): f2fs_convert_inline_folio: corrupted inline inode ino=3, i_addr[0]:0x1601, run fsck to fix. ------------[ cut here ]------------ kernel BUG at fs/inode.c:753! RIP: 0010:clear_inode\u002B0x169/0x190 fs/inode.c:753 Call Trace:  \u003CTASK\u003E  evict\u002B0x504/0x9c0 fs/inode.c:810  f2fs_fill_super\u002B0x5612/0x6fa0 fs/f2fs/super.c:5047  get_tree_bdev_flags\u002B0x40e/0x4d0 fs/super.c:1692  vfs_get_tree\u002B0x8f/0x2b0 fs/super.c:1815  do_new_mount\u002B0x2a2/0x9e0 fs/namespace.c:3808  do_mount fs/namespace.c:4136 [inline]  __do_sys_mount fs/namespace.c:4347 [inline]  __se_sys_mount\u002B0x317/0x410 fs/namespace.c:4324  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]  do_syscall_64\u002B0xfa/0x3b0 arch/x86/entry/syscall_64.c:94  entry_SYSCALL_64_after_hwframe\u002B0x77/0x7f  During f2fs_evict_inode(), clear_inode() detects that we missed to truncate all page cache before destorying inode, that is because in below path, we will create page #0 in cache, but missed to drop it in error path, let\u0027s fix it.  - evict  - f2fs_evict_inode   - f2fs_truncate    - f2fs_convert_inline_inode     - f2fs_grab_cache_folio     : create page #0 in cache     - f2fs_convert_inline_folio     : sanity check failed, return -EFSCORRUPTED   - clear_inode detects that inode-\u003Ei_data.nrpages is not zero",
  "published": "2025-11-12T11:15:43Z",
  "severity": "",
  "epss": 0.00214,
  "epssPercentile": 0.11761,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.57-1",
      "fix": "DEBIAN-CVE-2025-40137",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40137",
      "released": "2025-11-12T11:15:43Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.17.6-1",
      "fix": "DEBIAN-CVE-2025-40137",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40137",
      "released": "2025-11-12T11:15:43Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}