A flaw in the Linux Kernel found. Use after free in the net/sched classifiers (clsfw, clsu32 and clsroute) can happen because of mainline/net/sched/clsfw.c incorrect handling of the existing filter in .change method that leads to an extra unbindtcf call for the associated class and that allows that class to be removed while it's still used. These bugs can be used for a local privilege escalation.

Upstream patch: https://lore.kernel.org/netdev/193d6cdf-d6c9-f9be-c36a-b2a7551d5fb6@mojatatu.com/

A flaw in the Linux Kernel found. Use after free in the net/sched classifiers (clsfw, clsu32 and clsroute) can happen because of mainline/net/sched/clsfw.c incorrect handling of the existing filter in .change method that leads to an extra unbindtcf call for the associated class and that allows that class to be removed while it's still used. These bugs can be used for a local privilege escalation.

Upstream patch: https://lore.kernel.org/netdev/193d6cdf-d6c9-f9be-c36a-b2a7551d5fb6@mojatatu.com/