Linux Kernel Null Pointer Dereference Vulnerability in Rockchip VOP Driver

A null pointer dereference vulnerability has been identified in the Linux kernel's Rockchip Video Output Processor (VOP) driver. This issue arises in the 'vop_bind()' function, where 'platform_get_resource()' may return NULL. If this occurs, calling 'resource_size()' will lead to a null pointer dereference. The vulnerability can be exploited by moving the 'resource_size()' call after 'devm_ioremap_resource()', which checks the resource for NULL before accessing it.

Impact

Exploitation of this vulnerability leads to a null pointer dereference, causing a crash or undefined behavior in the kernel.