Linux Kernel NULL Pointer Dereference Vulnerability in iwlwifi Component

A vulnerability allowing a NULL pointer dereference has been identified in the Linux kernel's iwlwifi component. This issue arises when iterating over the links of a virtual interface (vif), as the process does not always ensure the validity of the pointer before dereferencing it. The vulnerability has been addressed by using a function that verifies the existence of the link before proceeding, thus preventing the potential dereference of a NULL pointer.

Impact

Exploitation of this vulnerability could lead to a system crash or undefined behavior, commonly associated with NULL pointer dereference issues.