In the Linux kernel, the following vulnerability has been resolved:

wifi: cfg80211: cancel sched scan results work on unregister

cfg80211_sched_scan_results() can queue rdev->sched_scan_res_wk from a
driver result notification while a scheduled scan request is present. The
work callback recovers the containing cfg80211_registered_device and then
locks the wiphy and walks the scheduled-scan request list.

wiphy_unregister() already makes the wiphy unreachable and drains rdev work
items before cfg80211_dev_free() can release the object, but it does not
drain sched_scan_res_wk. A queued or running result work item can therefore
cross the unregister/free boundary and access freed rdev state.

The buggy scenario involves two paths, with each column showing the order
within that path:

scheduled-scan result path:        unregister/free path:
1. cfg80211_sched_scan_results()   1. interface teardown stops and
   queues rdev->sched_scan_res_wk.    removes the scheduled scan request.
2. cfg80211_wq starts the work     2. wiphy_unregister() drains other
   item and recovers rdev.            rdev work items.
3. The worker locks rdev->wiphy    3. cfg80211_dev_free() destroys and
   and walks rdev state.              frees rdev.

Cancel sched_scan_res_wk in wiphy_unregister() alongside the other rdev
work items. cancel_work_sync() removes a pending result notification and
waits for an already running callback, so cfg80211_dev_free() cannot free
rdev while this work item is still active.

Validation reproduced this kernel report:
BUG: KASAN: use-after-free in cfg80211_sched_scan_results_wk+0x4a6/0x530
Workqueue: cfg80211 cfg80211_sched_scan_results_wk [cfg80211]
Read of size 8
Call trace:
  dump_stack_lvl+0x66/0xa0
  print_report+0xce/0x630
  cfg80211_sched_scan_results_wk+0x4a6/0x530
  srso_alias_return_thunk+0x5/0xfbef5
  __virt_addr_valid+0x224/0x430
  kasan_report+0xac/0xe0
  lockdep_hardirqs_on_prepare+0xea/0x1a0
  process_one_work+0x8d0/0x18f0 (kernel/workqueue.c:3212)
  lock_is_held_type+0x8f/0x100
  worker_thread+0x5ad/0xfd0
  __kthread_parkme+0xc6/0x200
  kthread+0x31e/0x410
  trace_hardirqs_on+0x1a/0x170
  ret_from_fork+0x576/0x810
  __switch_to+0x57e/0xe20
  __switch_to_asm+0x33/0x70
  ret_from_fork_asm+0x1a/0x30

https://git.kernel.org/stable/c/308ffdf575560d7e7b8b21f1e3ca6276630f73bf

https://git.kernel.org/stable/c/3368457b4871ae8f0f88d19c9a3e6270e850ede6

https://git.kernel.org/stable/c/9293574ac208d18c11073538851fb69355beb3b5

https://git.kernel.org/stable/c/b119c70b24776c8ab2a2c0515397b3b0ad4e66cd

https://git.kernel.org/stable/c/edf0730be33696a1bd142792830d392129e495cc

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/wireless/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"807f8a8c300435d5483e8d78df9dcdbc27333166","lessThan":"3368457b4871ae8f0f88d19c9a3e6270e850ede6","versionType":"git","status":"affected"},{"version":"807f8a8c300435d5483e8d78df9dcdbc27333166","lessThan":"308ffdf575560d7e7b8b21f1e3ca6276630f73bf","versionType":"git","status":"affected"},{"version":"807f8a8c300435d5483e8d78df9dcdbc27333166","lessThan":"9293574ac208d18c11073538851fb69355beb3b5","versionType":"git","status":"affected"},{"version":"807f8a8c300435d5483e8d78df9dcdbc27333166","lessThan":"b119c70b24776c8ab2a2c0515397b3b0ad4e66cd","versionType":"git","status":"affected"},{"version":"807f8a8c300435d5483e8d78df9dcdbc27333166","lessThan":"edf0730be33696a1bd142792830d392129e495cc","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/wireless/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3.0","status":"affected"},{"version":"0","lessThan":"3.0","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc4","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]