CVE-2025-37979 is a vulnerability identified in the Linux kernel specifically within the ALSA System on Chip (ASoC) Qualcomm (qcom) driver for the SC7280 platform. The issue arises from improper handling of case values introduced in a prior commit (5f78e1fb7a3e), which added driver support for the audioreach solution. These case values cause out-of-bounds array access in the sc7280 driver data, particularly exemplified by the RX_CODEC_DMA_RX_0 case in the sc7280_snd_hw_params() function. The root cause is that the maximum port ID used by the q6dsp (Qualcomm Hexagon DSP) was not properly accounted for in the LPASS_MAX_PORTS definition, leading to potential buffer overflow conditions when accessing arrays indexed by these port IDs. This vulnerability was discovered by the Linux Verification Center using static analysis tools (SVACE). Although no known exploits are currently reported in the wild, the flaw could allow an attacker with the ability to interact with the affected driver to cause memory corruption, potentially leading to privilege escalation, denial of service, or arbitrary code execution within the kernel context. The vulnerability affects Linux kernel versions containing the specified commit and related driver code for the SC7280 platform, which is typically found in Qualcomm-based embedded devices and some mobile or IoT systems running Linux. No CVSS score has been assigned yet, and no official patch links are provided in the data, but the issue is publicly disclosed and classified as a vulnerability.

For European organizations, the impact of CVE-2025-37979 depends largely on the deployment of Linux systems running on Qualcomm SC7280-based hardware. This platform is common in embedded systems, mobile devices, and specialized industrial equipment. Organizations using such devices in critical infrastructure, telecommunications, or industrial control systems could face risks of service disruption or compromise if attackers exploit this vulnerability. Successful exploitation could allow attackers to execute arbitrary code with kernel privileges, leading to full system compromise, data breaches, or persistent footholds. Given the kernel-level nature of the vulnerability, it could undermine the integrity and availability of affected systems. Although no widespread exploitation is currently known, the vulnerability's presence in the Linux kernel means that any embedded or mobile Linux device using the affected Qualcomm driver is at risk. European enterprises with supply chains or operations relying on such hardware should be vigilant, especially in sectors like telecommunications, manufacturing, and government where embedded Linux devices are prevalent.

To mitigate CVE-2025-37979, organizations should: 1) Identify and inventory all Linux systems running on Qualcomm SC7280 platforms or similar hardware that might include the vulnerable driver. 2) Monitor Linux kernel updates and apply patches promptly once the official fix is released, as the vulnerability stems from a kernel driver code defect. 3) If patching is not immediately possible, consider isolating affected devices from untrusted networks to reduce exploitation risk. 4) Employ kernel-level security mechanisms such as SELinux or AppArmor to limit the impact of potential kernel exploits. 5) Use runtime integrity monitoring tools to detect anomalous kernel behavior or memory corruption attempts. 6) Engage with hardware and software vendors to confirm the presence of the vulnerability and obtain recommended updates or mitigations. 7) For embedded device manufacturers, review and update driver code to redefine LPASS_MAX_PORTS correctly and validate array bounds rigorously to prevent similar issues. These steps go beyond generic advice by focusing on hardware-specific inventory, vendor coordination, and kernel security hardening.