{
  "cveId": "CVE-2025-68323",
  "url": "https://patchblox.com/security/cve/CVE-2025-68323",
  "summary": "CVE-2025-68323 is fixed in linux on 1 platform by DEBIAN-CVE-2025-68323 (version 6.17.13-1), released December 18, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  usb: typec: ucsi: fix use-after-free caused by u...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  usb: typec: ucsi: fix use-after-free caused by uec-\u003Ework  The delayed work uec-\u003Ework is scheduled in gaokun_ucsi_probe() but never properly canceled in gaokun_ucsi_remove(). This creates use-after-free scenarios where the ucsi and gaokun_ucsi structure are freed after ucsi_destroy() completes execution, while the gaokun_ucsi_register_worker() might be either currently executing or still pending in the work queue. The already-freed gaokun_ucsi or ucsi structure may then be accessed.  Furthermore, the race window is 3 seconds, which is sufficiently long to make this bug easily reproducible. The following is the trace captured by KASAN:  ================================================================== BUG: KASAN: slab-use-after-free in __run_timers\u002B0x5ec/0x630 Write of size 8 at addr ffff00000ec28cc8 by task swapper/0/0 ... Call trace:  show_stack\u002B0x18/0x24 (C)  dump_stack_lvl\u002B0x78/0x90  print_report\u002B0x114/0x580  kasan_report\u002B0xa4/0xf0  __asan_report_store8_noabort\u002B0x20/0x2c  __run_timers\u002B0x5ec/0x630  run_timer_softirq\u002B0xe8/0x1cc  handle_softirqs\u002B0x294/0x720  __do_softirq\u002B0x14/0x20  ____do_softirq\u002B0x10/0x1c  call_on_irq_stack\u002B0x30/0x48  do_softirq_own_stack\u002B0x1c/0x28  __irq_exit_rcu\u002B0x27c/0x364  irq_exit_rcu\u002B0x10/0x1c  el1_interrupt\u002B0x40/0x60  el1h_64_irq_handler\u002B0x18/0x24  el1h_64_irq\u002B0x6c/0x70  arch_local_irq_enable\u002B0x4/0x8 (P)  do_idle\u002B0x334/0x458  cpu_startup_entry\u002B0x60/0x70  rest_init\u002B0x158/0x174  start_kernel\u002B0x2f8/0x394  __primary_switched\u002B0x8c/0x94  Allocated by task 72 on cpu 0 at 27.510341s:  kasan_save_stack\u002B0x2c/0x54  kasan_save_track\u002B0x24/0x5c  kasan_save_alloc_info\u002B0x40/0x54  __kasan_kmalloc\u002B0xa0/0xb8  __kmalloc_node_track_caller_noprof\u002B0x1c0/0x588  devm_kmalloc\u002B0x7c/0x1c8  gaokun_ucsi_probe\u002B0xa0/0x840  auxiliary_bus_probe\u002B0x94/0xf8  really_probe\u002B0x17c/0x5b8  __driver_probe_device\u002B0x158/0x2c4  driver_probe_device\u002B0x10c/0x264  __device_attach_driver\u002B0x168/0x2d0  bus_for_each_drv\u002B0x100/0x188  __device_attach\u002B0x174/0x368  device_initial_probe\u002B0x14/0x20  bus_probe_device\u002B0x120/0x150  device_add\u002B0xb3c/0x10fc  __auxiliary_device_add\u002B0x88/0x130 ...  Freed by task 73 on cpu 1 at 28.910627s:  kasan_save_stack\u002B0x2c/0x54  kasan_save_track\u002B0x24/0x5c  __kasan_save_free_info\u002B0x4c/0x74  __kasan_slab_free\u002B0x60/0x8c  kfree\u002B0xd4/0x410  devres_release_all\u002B0x140/0x1f0  device_unbind_cleanup\u002B0x20/0x190  device_release_driver_internal\u002B0x344/0x460  device_release_driver\u002B0x18/0x24  bus_remove_device\u002B0x198/0x274  device_del\u002B0x310/0xa84 ...  The buggy address belongs to the object at ffff00000ec28c00  which belongs to the cache kmalloc-512 of size 512 The buggy address is located 200 bytes inside of  freed 512-byte region The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4ec28 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x3fffe0000000040(head|node=0|zone=0|lastcpupid=0x1ffff) page_type: f5(slab) raw: 03fffe0000000040 ffff000008801c80 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 head: 03fffe0000000040 ffff000008801c80 dead000000000122 0000000000000000 head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 head: 03fffe0000000002 fffffdffc03b0a01 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 page dumped because: kasan: bad access detected  Memory state around the buggy address:  ffff00000ec28b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc  ffff00000ec28c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb \u003Effff00000ec28c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb                                               ^  ffff00000ec28d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb  ffff00000ec28d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================ ---truncated---",
  "published": "2025-12-18T15:16:06Z",
  "severity": "",
  "epss": 0.00199,
  "epssPercentile": 0.0982,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.17.13-1",
      "fix": "DEBIAN-CVE-2025-68323",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-68323",
      "released": "2025-12-18T15:16:06Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}