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Vulnerability · Published Oct 4, 2025 · Assigned by Linux

CVE-2025-39937net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.1%top 95.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.158-1DSA-6053-1
Debian:12linux6.1.158-1DEBIAN-CVE-2025-39937
Debian:13linux6.12.57-1DEBIAN-CVE-2025-39937
Debian:14linux6.16.9-1DEBIAN-CVE-2025-39937
Ubuntu:22.04:LTSlinux5.15.0-170.180UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux5.15.0-170.180USN-8033-1
Ubuntu:24.04:LTSlinux6.8.0-106.106UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-aws5.15.0-1100.107UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-aws5.15.0-1100.107USN-8033-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1050.53UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1050.53~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-azure5.15.0-1109.118USN-8163-2
Ubuntu:22.04:LTSlinux-azure5.15.0-1109.118UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-azure6.8.0-1051.57UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1051.57~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1109.118.1UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2025-39937
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-gcp5.15.0-1100.109USN-8033-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1100.109UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-gcp6.8.0-1052.55UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1052.55~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-gke5.15.0-1096.102UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-gke5.15.0-1096.102USN-8033-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1048.53UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1083.91UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1083.91USN-8033-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1035.38UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-106.106~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-ibm5.15.0-1094.97USN-8033-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1094.97UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-ibm6.8.0-1049.49UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1049.49~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1095.101UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1095.101USN-8033-8
Ubuntu:22.04:LTSlinux-kvm5.15.0-1092.97UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-kvm5.15.0-1092.97USN-8033-5
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-170.180UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-170.180USN-8033-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-106.106.1UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-106.106.1~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1095.96UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1095.96USN-8033-6
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1049.52UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1049.52~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1049.52.1UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1052.52USN-8034-1
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1052.52UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1020.20UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1041.41UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1041.41USN-8034-2
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-oracle5.15.0-1097.103USN-8033-5
Ubuntu:22.04:LTSlinux-oracle5.15.0-1097.103UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-oracle6.8.0-1047.48UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1047.48~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-raspi5.15.0-1097.100UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-raspi5.15.0-1097.100USN-8141-1
Ubuntu:24.04:LTSlinux-raspi6.8.0-1050.54UBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-106.106~22.04.1UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-39937
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1028.29UBUNTU-CVE-2025-39937
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1064.68USN-8033-7
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1064.68UBUNTU-CVE-2025-39937

Affected products (as reported)

VendorProductVersions
Linux Linux 7d5e9737efda16535e5b54bd627ef4881d11d31f – before 184f608a68f96794e8fe58cd5535014d53622cde7d5e9737efda16535e5b54bd627ef4881d11d31f – before 8793e7a8e1b60131a825457174ed6398111daeb77d5e9737efda16535e5b54bd627ef4881d11d31f – before ada2282259243387e6b6e89239aeb4897e62f0517d5e9737efda16535e5b54bd627ef4881d11d31f – before 47ade5f9d70b23a119ec20b1c6504864b2543a797d5e9737efda16535e5b54bd627ef4881d11d31f – before 689aee35ce671aab752f159e5c8e66d7685e68877d5e9737efda16535e5b54bd627ef4881d11d31f – before 21ba85d9d508422ca9e6698463ff9357c928c22d7d5e9737efda16535e5b54bd627ef4881d11d31f – before 21a39b958b4bcf44f7674bfbbe1bbb8cad0d842d7d5e9737efda16535e5b54bd627ef4881d11d31f – before b6f56a44e4c1014b08859dcf04ed246500e310e5
Linux Linux 4.6

References