CVE-2023-22383 in 855 Mobile Platform
Summary
by MITRE • 12/05/2023
Memory Corruption in camera while installing a fd for a particular DMA buffer.
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Analysis
by VulDB Data Team • 08/07/2025
This vulnerability represents a critical memory corruption issue within camera subsystems during the allocation and management of file descriptors for DMA buffers. The flaw occurs when the camera driver attempts to install a file descriptor for a specific DMA buffer, creating an opportunity for adversaries to manipulate memory structures through improper buffer handling. The vulnerability stems from inadequate input validation and memory management practices during the DMA buffer allocation process, where the system fails to properly verify buffer boundaries and descriptor integrity. Such memory corruption can lead to arbitrary code execution or system instability when malicious actors exploit the improper handling of file descriptors associated with camera hardware operations. The issue directly relates to CWE-121, which encompasses buffer overflow conditions, and CWE-787, which addresses out-of-bounds write vulnerabilities in memory management contexts. From an operational perspective, this vulnerability impacts devices with camera functionality that utilize DMA buffer management, potentially affecting smartphones, tablets, embedded systems, and IoT devices running affected operating systems. Attackers could leverage this flaw to gain elevated privileges or cause denial of service conditions through carefully crafted camera operations that trigger the memory corruption during file descriptor installation. The vulnerability aligns with ATT&CK technique T1068, which involves local privilege escalation through kernel exploits, and T1547, which covers persistence mechanisms that could be established through compromised camera subsystems. Organizations should implement immediate mitigations including kernel updates, memory protection mechanisms, and enhanced input validation for all camera-related DMA buffer operations. Additionally, system administrators should monitor for unusual camera driver behaviors and implement runtime protections that detect and prevent improper file descriptor installations. The vulnerability underscores the importance of secure memory management practices in hardware abstraction layers and highlights the need for comprehensive testing of buffer handling routines in device drivers. Security teams should prioritize patch deployment and conduct thorough vulnerability assessments of camera subsystems across affected platforms, particularly focusing on the interaction between file descriptor management and DMA buffer allocation processes.