CVE-2025-47376 in Snapdragon Auto
Summary
by MITRE • 03/02/2026
Memory Corruption when concurrent access to shared buffer occurs during IOCTL calls.
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Analysis
by VulDB Data Team • 03/02/2026
This vulnerability represents a critical memory corruption issue that manifests when multiple threads or processes simultaneously access a shared buffer during ioctl system calls. The flaw occurs at the kernel level where concurrent access patterns create race conditions that can lead to improper memory management and buffer overflows. The vulnerability is particularly dangerous because it operates within the kernel space where unauthorized memory manipulation can result in complete system compromise. When multiple concurrent threads attempt to read from or write to the same shared buffer while an ioctl operation is in progress, the memory management subsystem fails to properly synchronize access, creating opportunities for memory corruption that can be exploited by malicious actors.
The technical root cause of this vulnerability lies in the improper implementation of synchronization mechanisms within the kernel driver code. The shared buffer management lacks adequate mutex locks or semaphore controls to prevent simultaneous access from multiple execution contexts. This race condition scenario typically occurs when one thread is writing to the buffer while another is reading from it, or when multiple threads attempt to modify the buffer simultaneously. The ioctl interface serves as the entry point where this vulnerability is triggered, making it accessible through standard system calls that applications use to communicate with kernel drivers. According to CWE standards, this vulnerability maps to CWE-362 which specifically addresses race conditions in concurrent programming scenarios.
The operational impact of this vulnerability extends beyond simple memory corruption to encompass potential system crashes, privilege escalation, and complete system compromise. An attacker who successfully exploits this vulnerability can manipulate kernel memory structures to gain elevated privileges, potentially achieving kernel-level code execution. The memory corruption can manifest as system instability, blue screen errors, or more insidiously as silent data corruption that may go undetected for extended periods. This type of vulnerability is particularly concerning in enterprise environments where kernel drivers are commonly used for hardware communication and system-level operations, as it provides a pathway for attackers to bypass traditional security controls and establish persistent access to critical systems.
Mitigation strategies for this vulnerability require immediate attention through patch management and system hardening measures. The most effective solution involves applying vendor-provided security patches that implement proper synchronization mechanisms for shared buffer access during ioctl operations. Organizations should also implement monitoring solutions that can detect anomalous ioctl call patterns and concurrent buffer access behaviors. From an ATT&CK framework perspective, this vulnerability relates to techniques such as privilege escalation and defense evasion, as attackers may use it to bypass system protections and maintain persistence. Additional mitigations include disabling unnecessary ioctl interfaces, implementing kernel address space layout randomization, and deploying kernel integrity protection mechanisms such as kernel module signing and secure boot configurations to prevent exploitation attempts.