{
  "cveId": "CVE-2022-50716",
  "url": "https://patchblox.com/security/cve/CVE-2022-50716",
  "summary": "CVE-2022-50716 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50716, released December 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  wifi: ar5523: Fix use-after-free on ar5523_cmd()...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  wifi: ar5523: Fix use-after-free on ar5523_cmd() timed out  syzkaller reported use-after-free with the stack trace like below [1]:  [   38.960489][    C3] ================================================================== [   38.963216][    C3] BUG: KASAN: use-after-free in ar5523_cmd_tx_cb\u002B0x220/0x240 [   38.964950][    C3] Read of size 8 at addr ffff888048e03450 by task swapper/3/0 [   38.966363][    C3] [   38.967053][    C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.0.0-09039-ga6afa4199d3d-dirty #18 [   38.968464][    C3] Hardware name: QEMU Standard PC (i440FX \u002B PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014 [   38.969959][    C3] Call Trace: [   38.970841][    C3]  \u003CIRQ\u003E [   38.971663][    C3]  dump_stack_lvl\u002B0xfc/0x174 [   38.972620][    C3]  print_report.cold\u002B0x2c3/0x752 [   38.973626][    C3]  ? ar5523_cmd_tx_cb\u002B0x220/0x240 [   38.974644][    C3]  kasan_report\u002B0xb1/0x1d0 [   38.975720][    C3]  ? ar5523_cmd_tx_cb\u002B0x220/0x240 [   38.976831][    C3]  ar5523_cmd_tx_cb\u002B0x220/0x240 [   38.978412][    C3]  __usb_hcd_giveback_urb\u002B0x353/0x5b0 [   38.979755][    C3]  usb_hcd_giveback_urb\u002B0x385/0x430 [   38.981266][    C3]  dummy_timer\u002B0x140c/0x34e0 [   38.982925][    C3]  ? notifier_call_chain\u002B0xb5/0x1e0 [   38.984761][    C3]  ? rcu_read_lock_sched_held\u002B0xb/0x60 [   38.986242][    C3]  ? lock_release\u002B0x51c/0x790 [   38.987323][    C3]  ? _raw_read_unlock_irqrestore\u002B0x37/0x70 [   38.988483][    C3]  ? __wake_up_common_lock\u002B0xde/0x130 [   38.989621][    C3]  ? reacquire_held_locks\u002B0x4a0/0x4a0 [   38.990777][    C3]  ? lock_acquire\u002B0x472/0x550 [   38.991919][    C3]  ? rcu_read_lock_sched_held\u002B0xb/0x60 [   38.993138][    C3]  ? lock_acquire\u002B0x472/0x550 [   38.994890][    C3]  ? dummy_urb_enqueue\u002B0x860/0x860 [   38.996266][    C3]  ? do_raw_spin_unlock\u002B0x16f/0x230 [   38.997670][    C3]  ? dummy_urb_enqueue\u002B0x860/0x860 [   38.999116][    C3]  call_timer_fn\u002B0x1a0/0x6a0 [   39.000668][    C3]  ? add_timer_on\u002B0x4a0/0x4a0 [   39.002137][    C3]  ? reacquire_held_locks\u002B0x4a0/0x4a0 [   39.003809][    C3]  ? __next_timer_interrupt\u002B0x226/0x2a0 [   39.005509][    C3]  __run_timers.part.0\u002B0x69a/0xac0 [   39.007025][    C3]  ? dummy_urb_enqueue\u002B0x860/0x860 [   39.008716][    C3]  ? call_timer_fn\u002B0x6a0/0x6a0 [   39.010254][    C3]  ? cpuacct_percpu_seq_show\u002B0x10/0x10 [   39.011795][    C3]  ? kvm_sched_clock_read\u002B0x14/0x40 [   39.013277][    C3]  ? sched_clock_cpu\u002B0x69/0x2b0 [   39.014724][    C3]  run_timer_softirq\u002B0xb6/0x1d0 [   39.016196][    C3]  __do_softirq\u002B0x1d2/0x9be [   39.017616][    C3]  __irq_exit_rcu\u002B0xeb/0x190 [   39.019004][    C3]  irq_exit_rcu\u002B0x5/0x20 [   39.020361][    C3]  sysvec_apic_timer_interrupt\u002B0x8f/0xb0 [   39.021965][    C3]  \u003C/IRQ\u003E [   39.023237][    C3]  \u003CTASK\u003E  In ar5523_probe(), ar5523_host_available() calls ar5523_cmd() as below (there are other functions which finally call ar5523_cmd()):  ar5523_probe() -\u003E ar5523_host_available()    -\u003E ar5523_cmd_read()       -\u003E ar5523_cmd()  If ar5523_cmd() timed out, then ar5523_host_available() failed and ar5523_probe() freed the device structure.  So, ar5523_cmd_tx_cb() might touch the freed structure.  This patch fixes this issue by canceling in-flight tx cmd if submitted urb timed out.",
  "published": "2025-12-24T13:15:58Z",
  "severity": "",
  "epss": 0.00284,
  "epssPercentile": 0.2104,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50716",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50716",
      "released": "2025-12-24T13:15:58Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50716",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50716",
      "released": "2025-12-24T13:15:58Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50716",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50716",
      "released": "2025-12-24T13:15:58Z"
    }
  ],
  "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"
  }
}