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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2023-53176 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: serial: 8250: Reinit port->pm on port specific driver unbind When we unbind a serial port hardware specific 8250 driver, the generic serial8250 driver takes over the port. After that we see an oops about 10 seconds later. This can produce the following at least on some TI SoCs: Unhandled fault: imprecise external abort (0x1406) Internal error: : 1406 [#1] SMP ARM Turns out that we may still have the serial port hardware specific driver port->pm in use, and serial8250_pm() tries to call it after the port specific driver is gone: serial8250_pm [8250_base] from uart_change_pm+0x54/0x8c [serial_base] uart_change_pm [serial_base] from uart_hangup+0x154/0x198 [serial_base] uart_hangup [serial_base] from __tty_hangup.part.0+0x328/0x37c __tty_hangup.part.0 from disassociate_ctty+0x154/0x20c disassociate_ctty from do_exit+0x744/0xaac do_exit from do_group_exit+0x40/0x8c do_group_exit from __wake_up_parent+0x0/0x1c Let's fix the issue by calling serial8250_set_defaults() in serial8250_unregister_port(). This will set the port back to using the serial8250 default functions, and sets the port->pm to point to serial8250_pm.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
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References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/04e82793f068d2f0ffe62fcea03d007a8cdc16a7 kernel.org Patch 
https://git.kernel.org/stable/c/1ba5594739d858e524ff0f398ee1ebfe0a8b9d41 kernel.org Patch 
https://git.kernel.org/stable/c/2c86a1305c1406f45ea780d06953c484ea1d9e6e kernel.org Patch 
https://git.kernel.org/stable/c/490bf37eaabb0a857ed1ae8e75d8854e41662f1c kernel.org Patch 
https://git.kernel.org/stable/c/8e596aed5f2f98cf3e6e98d6fe1d689f4a319308 kernel.org Patch 
https://git.kernel.org/stable/c/af4d6dbb1a92ea424ad1ba1d0c88c7fa2345d872 kernel.org Patch 
https://git.kernel.org/stable/c/c9e080c3005fd183c56ff8f4d75edb5da0765d2c kernel.org Patch 
https://git.kernel.org/stable/c/d5cd2928d31042a7c0a01464f9a8d95be736421d kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-53176
NVD Published Date:
09/15/2025
NVD Last Modified:
12/01/2025
Source:
kernel.org