{
  "cveId": "CVE-2025-68240",
  "url": "https://patchblox.com/security/cve/CVE-2025-68240",
  "summary": "CVE-2025-68240 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-68240, released December 16, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  nilfs2: avoid having an active sc_timer before f...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  nilfs2: avoid having an active sc_timer before freeing sci  Because kthread_stop did not stop sc_task properly and returned -EINTR, the sc_timer was not properly closed, ultimately causing the problem [1] reported by syzbot when freeing sci due to the sc_timer not being closed.  Because the thread sc_task main function nilfs_segctor_thread() returns 0 when it succeeds, when the return value of kthread_stop() is not 0 in nilfs_segctor_destroy(), we believe that it has not properly closed sc_timer.  We use timer_shutdown_sync() to sync wait for sc_timer to shutdown, and set the value of sc_task to NULL under the protection of lock sc_state_lock, so as to avoid the issue caused by sc_timer not being properly shutdowned.  [1] ODEBUG: free active (active state 0) object: 00000000dacb411a object type: timer_list hint: nilfs_construction_timeout Call trace:  nilfs_segctor_destroy fs/nilfs2/segment.c:2811 [inline]  nilfs_detach_log_writer\u002B0x668/0x8cc fs/nilfs2/segment.c:2877  nilfs_put_super\u002B0x4c/0x12c fs/nilfs2/super.c:509",
  "published": "2025-12-16T15:15:53Z",
  "severity": "",
  "epss": 0.00184,
  "epssPercentile": 0.08007,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.63-1",
      "fix": "DEBIAN-CVE-2025-68240",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-68240",
      "released": "2025-12-16T15:15:53Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.17.9-1",
      "fix": "DEBIAN-CVE-2025-68240",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-68240",
      "released": "2025-12-16T15:15:53Z"
    }
  ],
  "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"
  }
}