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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-39937 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer Since commit 7d5e9737efda ("net: rfkill: gpio: get the name and type from device property") rfkill_find_type() gets called with the possibly uninitialized "const char *type_name;" local variable. On x86 systems when rfkill-gpio binds to a "BCM4752" or "LNV4752" acpi_device, the rfkill->type is set based on the ACPI acpi_device_id: rfkill->type = (unsigned)id->driver_data; and there is no "type" property so device_property_read_string() will fail and leave type_name uninitialized, leading to a potential crash. rfkill_find_type() does accept a NULL pointer, fix the potential crash by initializing type_name to NULL. Note likely sofar this has not been caught because: 1. Not many x86 machines actually have a "BCM4752"/"LNV4752" acpi_device 2. The stack happened to contain NULL where type_name is stored


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/184f608a68f96794e8fe58cd5535014d53622cde kernel.org Patch 
https://git.kernel.org/stable/c/21a39b958b4bcf44f7674bfbbe1bbb8cad0d842d kernel.org Patch 
https://git.kernel.org/stable/c/21ba85d9d508422ca9e6698463ff9357c928c22d kernel.org Patch 
https://git.kernel.org/stable/c/47ade5f9d70b23a119ec20b1c6504864b2543a79 kernel.org Patch 
https://git.kernel.org/stable/c/689aee35ce671aab752f159e5c8e66d7685e6887 kernel.org Patch 
https://git.kernel.org/stable/c/8793e7a8e1b60131a825457174ed6398111daeb7 kernel.org Patch 
https://git.kernel.org/stable/c/ada2282259243387e6b6e89239aeb4897e62f051 kernel.org Patch 
https://git.kernel.org/stable/c/b6f56a44e4c1014b08859dcf04ed246500e310e5 kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-39937
NVD Published Date:
10/04/2025
NVD Last Modified:
01/27/2026
Source:
kernel.org