CVE-2023-53281

MEDIUM EPSS 1.5%
Published Sep 16, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 16, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: drivers: staging: rtl8723bs: Fix locking in _rtw_join_timeout_handler() Commit 041879b12ddb ("drivers: staging: rtl8192bs: Fix deadlock in rtw_joinbss_event_prehandle()") 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->scanned_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+0xa6/0x100 ... [ 244.509022] Call Trace: [ 244.509048] <IRQ> [ 244.509100] _rtw_join_timeout_handler+0x134/0x170 [r8723bs] [ 244.509468] ? __pfx__rtw_join_timeout_handler+0x10/0x10 [r8723bs] [ 244.509772] ? __pfx__rtw_join_timeout_handler+0x10/0x10 [r8723bs] [ 244.510076] call_timer_fn+0x95/0x2a0 [ 244.510200] __run_timers.part.0+0x1da/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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
1.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-667

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥5.15.47  –  <5.15.111
linuxlinux_kernel*≥5.17.15  –  <5.18
linuxlinux_kernel*≥5.18.4  –  <6.1.28
linuxlinux_kernel*≥6.2  –  <6.2.15
linuxlinux_kernel*≥6.3  –  <6.3.2

References 5

  • git.kernel.org https://git.kernel.org/stable/c/209850f17717a3b5cc558578bef5631ac7045539
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/215792eda008f6a1e7ed9d77fa20d582d22bb114
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2a50e44a66d268ee5db3d177f1fdc1503dbce6e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ab1bace1dd3875371b481ef4301c4671bddea22
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc327e87c6d9bfd9ee08e76396b3c0ba848ec554
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/209850f17717a3b5cc558578bef5631ac7045539
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/215792eda008f6a1e7ed9d77fa20d582d22bb114
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2a50e44a66d268ee5db3d177f1fdc1503dbce6e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ab1bace1dd3875371b481ef4301c4671bddea22
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc327e87c6d9bfd9ee08e76396b3c0ba848ec554
    Patch