CVE-2025-58344 is a vulnerability identified in the Wi-Fi driver component of Samsung's Exynos series processors, including models 980, 850, 1080, 1280, 2200, 1330, 1380, 1480, 1580, and wearable processors W920, W930, and W1000. The issue arises from an unbounded memory allocation triggered by a write operation to the /proc/driver/unifi0/conn_log_event_burst_to_us interface. This procfs interface is used for logging Wi-Fi connection events, and improper handling of input data leads to uncontrolled kernel memory consumption. The consequence is kernel memory exhaustion, which can result in denial of service conditions such as system crashes, reboots, or degraded performance. The vulnerability does not have an assigned CVSS score yet, and no patches or known exploits have been reported as of the publication date (February 3, 2026). Exploitation likely requires local access or user-level interaction to write to the procfs entry, which may limit remote exploitation but still poses a risk on compromised or physically accessible devices. The affected processors are embedded in a wide range of Samsung mobile phones and wearable devices, making the vulnerability relevant to a large user base. The flaw impacts the kernel's stability and availability but does not directly indicate confidentiality or integrity compromise. The lack of authentication requirement for the write operation increases the risk, especially in environments where untrusted applications or users have device-level access. This vulnerability highlights the importance of secure driver development and input validation in kernel modules handling user-space interactions.

For European organizations, the primary impact of CVE-2025-58344 is on device availability and operational continuity. Samsung devices powered by the affected Exynos processors are widely used across Europe in both consumer and enterprise contexts, including mobile workforces and IoT deployments with wearables. Exploitation could lead to denial of service on critical mobile devices, disrupting communication, access to corporate resources, and potentially impacting business operations reliant on mobile connectivity. In sectors such as finance, healthcare, and government, where mobile device reliability is crucial, this could degrade service quality or cause operational delays. Additionally, devices used in security-sensitive roles could be rendered inoperative, increasing risk exposure. Although no known exploits exist yet, the vulnerability's presence in a widely deployed chipset family means attackers could develop exploits targeting European users. The lack of patches further elevates risk until vendors release fixes. The impact is primarily on availability, but indirect effects on integrity and confidentiality could arise if device instability leads to security controls failing or data loss during crashes.

1. Restrict access to the /proc/driver/unifi0/conn_log_event_burst_to_us interface by enforcing strict permissions and limiting write access to trusted system components only. 2. Monitor device logs and kernel memory usage for abnormal spikes that could indicate exploitation attempts. 3. Implement application whitelisting and restrict installation of untrusted apps to reduce risk of local exploitation. 4. Educate users and administrators about the risk of running untrusted code or scripts that could trigger the vulnerability. 5. Coordinate with Samsung and device vendors to obtain and deploy security patches promptly once available. 6. For enterprise-managed devices, use Mobile Device Management (MDM) solutions to enforce security policies and restrict access to vulnerable interfaces. 7. Consider network-level protections to detect and block anomalous device behavior indicative of exploitation attempts. 8. In high-risk environments, evaluate the feasibility of temporarily disabling Wi-Fi or using alternative connectivity until patches are applied. 9. Maintain up-to-date inventories of affected devices to prioritize mitigation efforts. 10. Engage with security vendors for threat intelligence updates related to this vulnerability.