CVE-2025-58341 is a security vulnerability identified in the Wi-Fi driver of Samsung Mobile and Wearable Processors, specifically the Exynos series including models 980, 850, 1080, 1280, 2200, 1330, 1380, 1480, 1580, and wearable processors W920, W930, and W1000. The vulnerability arises from an unbounded memory allocation triggered by writing a large buffer to the /proc/driver/unifi0/ap_cert_disable_ht_vht interface. This operation leads to kernel memory exhaustion, effectively causing a denial-of-service (DoS) condition by destabilizing or crashing the kernel. The /proc filesystem is a pseudo-filesystem used for kernel and process information, and the specific write operation here is improperly handled, allowing an attacker to allocate excessive memory without bounds. This flaw does not require authentication, but local access to the device is necessary to perform the write operation. The vulnerability affects the availability of the device by exhausting kernel memory, potentially causing system crashes or reboots. No patches or exploit code are currently publicly available, and no CVSS score has been assigned yet. The vulnerability impacts a broad range of Samsung devices using these processors, including many popular smartphones and wearables. Given the widespread use of Samsung devices globally, this vulnerability could have significant implications if exploited. The technical root cause is a lack of input validation and memory allocation limits in the Wi-Fi driver's proc interface handler, which should be addressed by Samsung through firmware or driver updates.

For European organizations, the primary impact of CVE-2025-58341 is the potential for denial-of-service attacks on devices using affected Samsung Exynos processors. This could disrupt mobile communications, especially for employees relying on Samsung smartphones and wearables for critical business functions. Operational continuity could be affected if devices become unstable or crash frequently. In sectors such as finance, healthcare, and government, where mobile device availability is crucial, this vulnerability could degrade productivity and service delivery. Additionally, if attackers gain local access to devices, they could exploit this flaw to cause repeated crashes, potentially leading to data loss or interruption of security monitoring tools running on these devices. While the vulnerability does not directly expose confidential data or allow privilege escalation, the availability impact alone can have cascading effects on organizational security posture and incident response capabilities. The lack of known exploits in the wild currently reduces immediate risk, but the broad device base and ease of triggering the flaw make it a significant concern once exploit code emerges.

To mitigate CVE-2025-58341, organizations should prioritize the following actions: 1) Monitor Samsung security advisories and promptly apply firmware and driver updates that address this vulnerability once released. 2) Restrict access to the /proc/driver/unifi0/ap_cert_disable_ht_vht interface by enforcing strict device access controls and limiting local user permissions to trusted personnel only. 3) Implement mobile device management (MDM) policies that can detect and prevent unauthorized local access or suspicious activity on Samsung devices. 4) Educate users about the risks of installing untrusted applications or granting unnecessary permissions that could enable local exploitation. 5) For critical environments, consider deploying endpoint detection and response (EDR) solutions capable of monitoring kernel-level anomalies or crashes indicative of exploitation attempts. 6) Conduct regular device health checks and kernel stability monitoring to quickly identify and remediate devices exhibiting signs of memory exhaustion or instability. 7) Collaborate with Samsung support channels to obtain early access to patches or workarounds. These measures go beyond generic advice by focusing on controlling access to the vulnerable interface and proactive device monitoring tailored to the specific flaw.