CVE-2025-58344 in Mobile Processor
Summary
by MITRE • 02/03/2026
An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850, 1080, 1280, 1330, 1380, 1480, 1580, W920, W930 and W1000. There is unbounded memory allocation in a /proc/driver/unifi0/conn_log_event_burst_to_us write operation, leading to kernel memory exhaustion.
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Analysis
by VulDB Data Team • 02/05/2026
The vulnerability identified as CVE-2025-58344 represents a critical memory management flaw within the Wi-Fi driver component of Samsung's Exynos mobile and wearable processors. This issue affects a broad range of Samsung devices including smartphones and smartwatches that utilize the Exynos 980, 850, 1080, 1280, 1330, 1380, 1480, 1580, W920, W930, and W1000 chipsets. The vulnerability stems from improper bounds checking in the kernel-level driver responsible for handling Wi-Fi connectivity operations, specifically within the /proc/driver/unifi0/conn_log_event_burst_to_us interface. This interface is designed to manage connection log events and burst time measurements, but fails to validate input parameters before allocating memory resources.
The technical flaw manifests as unbounded memory allocation during write operations to the specified proc filesystem entry, allowing malicious actors to trigger excessive kernel memory consumption. This type of vulnerability falls under CWE-129, Input Validation, and specifically relates to improper validation of input boundaries, which can lead to memory corruption and system instability. The lack of proper input sanitization enables attackers to craft malicious payloads that can cause the kernel to allocate increasingly large amounts of memory without bounds, ultimately leading to kernel memory exhaustion. This memory exhaustion condition can result in system crashes, denial of service conditions, and potentially create opportunities for privilege escalation attacks.
The operational impact of this vulnerability extends beyond simple service disruption, as it affects the fundamental stability and security posture of Samsung mobile and wearable devices. When the kernel memory becomes exhausted, the system may become unresponsive, requiring manual reboot to restore functionality. In an attacker-controlled environment, this vulnerability could be exploited to perform persistent denial of service attacks against target devices, rendering them unusable for legitimate users. The vulnerability's exploitation potential is further enhanced by the fact that it operates at the kernel level, providing attackers with elevated privileges and access to critical system resources. Additionally, this flaw could serve as a vector for more sophisticated attacks that leverage the memory exhaustion condition to execute arbitrary code or manipulate system behavior.
Mitigation strategies for CVE-2025-58344 should prioritize immediate firmware updates from Samsung, as the vendor is likely to release patches addressing the unbounded memory allocation issue through proper input validation and memory boundary checks. System administrators and device users should implement monitoring solutions to detect anomalous memory usage patterns that may indicate exploitation attempts. The fix should incorporate proper bounds checking mechanisms that validate input parameters before memory allocation occurs, aligning with ATT&CK technique T1059.001 for command and scripting interpreter usage, as attackers may attempt to exploit the vulnerability through kernel-level command injection. Organizations should also consider implementing runtime protection measures such as kernel memory protection features, stack canaries, and address space layout randomization to complicate exploitation attempts. The vulnerability demonstrates the importance of proper memory management in kernel drivers and highlights the need for comprehensive security testing of device drivers, particularly those handling network connectivity functions that are critical to device operation.