Answer in brief
CVE-2025-39937 records a Medium severity (CVSS 5.5) vulnerability in net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7d5e9737efda16535e5b54bd627ef4881d11d31f <184f608a68f96794e8fe58cd5535014d53622cde || >=7d5e9737efda16535e5b54bd627ef4881d11d31f <8793e7a8e1b60131a825457174ed6398111daeb7 || >=7d5e9737efda16535e5b54bd627ef4881d11d31f <ada2282259243387e6b6e89239aeb4897e62f051 || >=7d5e9737efda16535e5b54bd627ef4881d11d31f <47ade5f9d70b23a119ec20b1c6504864b2543a79 || >=7d5e9737efda16535e5b54bd627ef4881d11d31f <689aee35ce671aab752f159e5c8e66d7685e6887 || >=7d5e9737efda16535e5b54bd627ef4881d11d31f <21ba85d9d508422ca9e6698463ff9357c928c22d || >=7d5e9737efda16535e5b54bd627ef4881d11d31f <21a39b958b4bcf44f7674bfbbe1bbb8cad0d842d || >=7d5e9737efda16535e5b54bd627ef4881d11d31f <b6f56a44e4c1014b08859dcf04ed246500e310e5 | 184f608a68f96794e8fe58cd5535014d53622cde, 8793e7a8e1b60131a825457174ed6398111daeb7, ada2282259243387e6b6e89239aeb4897e62f051, 47ade5f9d70b23a119ec20b1c6504864b2543a79, 689aee35ce671aab752f159e5c8e66d7685e6887, 21ba85d9d508422ca9e6698463ff9357c928c22d, 21a39b958b4bcf44f7674bfbbe1bbb8cad0d842d, b6f56a44e4c1014b08859dcf04ed246500e310e5 |
| Linux/Linuxgeneric | 4.6 | Not reported |
Published upstream
Oct 4, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 28, 2026
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
Quoted source text, attributed separately from HOL analysis.