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
References
Configurations
Configuration 1 (hide)
|
History
27 Jan 2026, 18:51
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | CWE-476 | |
| CPE | cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/184f608a68f96794e8fe58cd5535014d53622cde - Patch | |
| References | () https://git.kernel.org/stable/c/21a39b958b4bcf44f7674bfbbe1bbb8cad0d842d - Patch | |
| References | () https://git.kernel.org/stable/c/21ba85d9d508422ca9e6698463ff9357c928c22d - Patch | |
| References | () https://git.kernel.org/stable/c/47ade5f9d70b23a119ec20b1c6504864b2543a79 - Patch | |
| References | () https://git.kernel.org/stable/c/689aee35ce671aab752f159e5c8e66d7685e6887 - Patch | |
| References | () https://git.kernel.org/stable/c/8793e7a8e1b60131a825457174ed6398111daeb7 - Patch | |
| References | () https://git.kernel.org/stable/c/ada2282259243387e6b6e89239aeb4897e62f051 - Patch | |
| References | () https://git.kernel.org/stable/c/b6f56a44e4c1014b08859dcf04ed246500e310e5 - Patch |
04 Oct 2025, 08:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-10-04 08:15
Updated : 2026-01-27 18:51
NVD link : CVE-2025-39937
Mitre link : CVE-2025-39937
CVE.ORG link : CVE-2025-39937
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference