The vulnerability of the fw_change() function in the net/sched/cls_fw.c module of the network scheduling subsystem of the Linux operating system allows a hacker to cause a service failure.

The vulnerability of the fwchange function in the net/sched/clsfw.c module of the network scheduling subsystem of the Linux operating system is related to the pointer manipulation. Exploiting this vulnerability could allow an attacker to cause a service failure...

CVE-2023-4207

A use-after-free vulnerability in the Linux kernel's net/sched: clsfw component can be exploited to achieve local privilege escalation. When fwchange is called on an existing filter, the whole tcfresult struct is always copied into the new instance of the filter. This causes a problem when updati...