{
  "cveId": "CVE-2023-53281",
  "url": "https://patchblox.com/security/cve/CVE-2023-53281",
  "summary": "CVE-2023-53281 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53281, released September 16, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  drivers: staging: rtl8723bs: Fix locking in _rtw...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drivers: staging: rtl8723bs: Fix locking in _rtw_join_timeout_handler()  Commit 041879b12ddb (\u0022drivers: staging: rtl8192bs: Fix deadlock in rtw_joinbss_event_prehandle()\u0022) besides fixing the deadlock also modified _rtw_join_timeout_handler() to use spin_[un]lock_irq() instead of spin_[un]lock_bh().  _rtw_join_timeout_handler() calls rtw_do_join() which takes pmlmepriv-\u003Escanned_queue.lock using spin_[un]lock_bh(). This spin_unlock_bh() call re-enables softirqs which triggers an oops in kernel/softirq.c: __local_bh_enable_ip() when it calls lockdep_assert_irqs_enabled():  [  244.506087] WARNING: CPU: 2 PID: 0 at kernel/softirq.c:376 __local_bh_enable_ip\u002B0xa6/0x100 ... [  244.509022] Call Trace: [  244.509048]  \u003CIRQ\u003E [  244.509100]  _rtw_join_timeout_handler\u002B0x134/0x170 [r8723bs] [  244.509468]  ? __pfx__rtw_join_timeout_handler\u002B0x10/0x10 [r8723bs] [  244.509772]  ? __pfx__rtw_join_timeout_handler\u002B0x10/0x10 [r8723bs] [  244.510076]  call_timer_fn\u002B0x95/0x2a0 [  244.510200]  __run_timers.part.0\u002B0x1da/0x2d0  This oops is causd by the switch to spin_[un]lock_irq() which disables the IRQs for the entire duration of _rtw_join_timeout_handler().  Disabling the IRQs is not necessary since all code taking this lock runs from either user contexts or from softirqs, switch back to spin_[un]lock_bh() to fix this.",
  "published": "2025-09-16T08:15:37Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00121,
  "epssPercentile": 0.01884,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.37-1",
      "fix": "DEBIAN-CVE-2023-53281",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53281",
      "released": "2025-09-16T08:15:37Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53281",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53281",
      "released": "2025-09-16T08:15:37Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53281",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53281",
      "released": "2025-09-16T08:15:37Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}