{
  "cveId": "CVE-2023-54068",
  "url": "https://patchblox.com/security/cve/CVE-2023-54068",
  "summary": "CVE-2023-54068 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54068, released December 24, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: compress: fix to call f2fs_wait_on_page_wr...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: compress: fix to call f2fs_wait_on_page_writeback() in f2fs_write_raw_pages()  BUG_ON() will be triggered when writing files concurrently, because the same page is writtenback multiple times.  1597 void folio_end_writeback(struct folio *folio) 1598 { \t\t...... 1618     if (!__folio_end_writeback(folio)) 1619         BUG(); \t\t...... 1625 }  kernel BUG at mm/filemap.c:1619! Call Trace:  \u003CTASK\u003E  f2fs_write_end_io\u002B0x1a0/0x370  blk_update_request\u002B0x6c/0x410  blk_mq_end_request\u002B0x15/0x130  blk_complete_reqs\u002B0x3c/0x50  __do_softirq\u002B0xb8/0x29b  ? sort_range\u002B0x20/0x20  run_ksoftirqd\u002B0x19/0x20  smpboot_thread_fn\u002B0x10b/0x1d0  kthread\u002B0xde/0x110  ? kthread_complete_and_exit\u002B0x20/0x20  ret_from_fork\u002B0x22/0x30  \u003C/TASK\u003E  Below is the concurrency scenario:  [Process A]\t\t[Process B]\t\t[Process C] f2fs_write_raw_pages()   - redirty_page_for_writepage()   - unlock page() \t\t\tf2fs_do_write_data_page() \t\t\t  - lock_page() \t\t\t  - clear_page_dirty_for_io() \t\t\t  - set_page_writeback() [1st writeback] \t\t\t    ..... \t\t\t    - unlock page()  \t\t\t\t\t\tgeneric_perform_write() \t\t\t\t\t\t  - f2fs_write_begin() \t\t\t\t\t\t    - wait_for_stable_page()  \t\t\t\t\t\t  - f2fs_write_end() \t\t\t\t\t\t    - set_page_dirty()    - lock_page()     - f2fs_do_write_data_page()       - set_page_writeback() [2st writeback]  This problem was introduced by the previous commit 7377e853967b (\u0022f2fs: compress: fix potential deadlock of compress file\u0022). All pagelocks were released in f2fs_write_raw_pages(), but whether the page was in the writeback state was ignored in the subsequent writing process. Let\u0027s fix it by waiting for the page to writeback before writing.",
  "published": "2025-12-24T13:16:08Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00155,
  "epssPercentile": 0.04628,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.37-1",
      "fix": "DEBIAN-CVE-2023-54068",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-54068",
      "released": "2025-12-24T13:16:08Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-54068",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-54068",
      "released": "2025-12-24T13:16:08Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-54068",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-54068",
      "released": "2025-12-24T13:16:08Z"
    }
  ],
  "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"
  }
}