Null Pointer Dereference in Linux anysee Media Driver Causes Crash

Executive Summary

This vulnerability is a null pointer dereference in the Linux kernel's anysee driver, specifically in the function anysee_master_xfer. The issue occurs because the function processes user-controlled data where a message buffer pointer (msg[i].buf) can be null while its length (msg[i].len) is zero. Previous checks only verified the buffer pointer but not the length, allowing malicious input to bypass these checks. When the code attempts to access msg[i].buf[0] without verifying the length, it causes a null pointer dereference, potentially crashing the system. The fix involves adding a check on msg[i].len to prevent this crash.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability can cause a null pointer dereference leading to a system crash or denial of service in the Linux kernel's anysee driver. An attacker controlling the input to anysee_master_xfer could exploit this to crash the system or disrupt normal operation.

Useful 0 Not Useful 0