CVE-2023-53281

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-53281
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/209850f17717a3b5cc558578bef5631ac7045539 Patch
https://git.kernel.org/stable/c/215792eda008f6a1e7ed9d77fa20d582d22bb114 Patch
https://git.kernel.org/stable/c/2a50e44a66d268ee5db3d177f1fdc1503dbce6e7 Patch
https://git.kernel.org/stable/c/4ab1bace1dd3875371b481ef4301c4671bddea22 Patch
https://git.kernel.org/stable/c/dc327e87c6d9bfd9ee08e76396b3c0ba848ec554 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

02 Dec 2025, 21:30

Type Values Removed Values Added
CWE CWE-667
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/209850f17717a3b5cc558578bef5631ac7045539 - () https://git.kernel.org/stable/c/209850f17717a3b5cc558578bef5631ac7045539 - Patch
References () https://git.kernel.org/stable/c/215792eda008f6a1e7ed9d77fa20d582d22bb114 - () https://git.kernel.org/stable/c/215792eda008f6a1e7ed9d77fa20d582d22bb114 - Patch
References () https://git.kernel.org/stable/c/2a50e44a66d268ee5db3d177f1fdc1503dbce6e7 - () https://git.kernel.org/stable/c/2a50e44a66d268ee5db3d177f1fdc1503dbce6e7 - Patch
References () https://git.kernel.org/stable/c/4ab1bace1dd3875371b481ef4301c4671bddea22 - () https://git.kernel.org/stable/c/4ab1bace1dd3875371b481ef4301c4671bddea22 - Patch
References () https://git.kernel.org/stable/c/dc327e87c6d9bfd9ee08e76396b3c0ba848ec554 - () https://git.kernel.org/stable/c/dc327e87c6d9bfd9ee08e76396b3c0ba848ec554 - Patch
Information

Published : 2025-09-16 08:15

Updated : 2025-12-02 21:30

NVD link : CVE-2023-53281

Mitre link : CVE-2023-53281

CVE.ORG link : CVE-2023-53281

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-667

Improper Locking