{
  "cveId": "CVE-2025-38163",
  "url": "https://patchblox.com/security/cve/CVE-2025-38163",
  "summary": "CVE-2025-38163 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2025-38163, released July 3, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "f2fs: fix to do sanity check on sbi-\u003Etotal_valid_block_count",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to do sanity check on sbi-\u003Etotal_valid_block_count  syzbot reported a f2fs bug as below:  ------------[ cut here ]------------ kernel BUG at fs/f2fs/f2fs.h:2521! RIP: 0010:dec_valid_block_count\u002B0x3b2/0x3c0 fs/f2fs/f2fs.h:2521 Call Trace:  f2fs_truncate_data_blocks_range\u002B0xc8c/0x11a0 fs/f2fs/file.c:695  truncate_dnode\u002B0x417/0x740 fs/f2fs/node.c:973  truncate_nodes\u002B0x3ec/0xf50 fs/f2fs/node.c:1014  f2fs_truncate_inode_blocks\u002B0x8e3/0x1370 fs/f2fs/node.c:1197  f2fs_do_truncate_blocks\u002B0x840/0x12b0 fs/f2fs/file.c:810  f2fs_truncate_blocks\u002B0x10d/0x300 fs/f2fs/file.c:838  f2fs_truncate\u002B0x417/0x720 fs/f2fs/file.c:888  f2fs_setattr\u002B0xc4f/0x12f0 fs/f2fs/file.c:1112  notify_change\u002B0xbca/0xe90 fs/attr.c:552  do_truncate\u002B0x222/0x310 fs/open.c:65  handle_truncate fs/namei.c:3466 [inline]  do_open fs/namei.c:3849 [inline]  path_openat\u002B0x2e4f/0x35d0 fs/namei.c:4004  do_filp_open\u002B0x284/0x4e0 fs/namei.c:4031  do_sys_openat2\u002B0x12b/0x1d0 fs/open.c:1429  do_sys_open fs/open.c:1444 [inline]  __do_sys_creat fs/open.c:1522 [inline]  __se_sys_creat fs/open.c:1516 [inline]  __x64_sys_creat\u002B0x124/0x170 fs/open.c:1516  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]  do_syscall_64\u002B0xf3/0x230 arch/x86/entry/syscall_64.c:94  The reason is: in fuzzed image, sbi-\u003Etotal_valid_block_count is inconsistent w/ mapped blocks indexed by inode, so, we should not trigger panic for such case, instead, let\u0027s print log and set fsck flag.",
  "published": "2025-07-03T09:15:31Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00187,
  "epssPercentile": 0.08382,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-38163",
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  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}