Linux Kernel NULL Pointer Dereference Vulnerability in MPOA_cache_impos_rcvd Function

A NULL pointer dereference vulnerability has been identified in the Linux kernel's ATM subsystem. The issue arises in the MPOA_cache_impos_rcvd() function when both the 'entry' and 'holding_time' parameters are NULL. This condition allows a NULL 'entry' to be passed to the eg_cache_put() function, leading to a dereference error. The vulnerability has been logged by KASAN, indicating a general protection fault due to a NULL pointer dereference.

Impact

Exploitation of this vulnerability leads to a general protection fault, causing a crash by dereferencing a NULL pointer, as reported in the KASAN log.