In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_CT: drop pending enqueued packets on template removal Templates refer to objects that can go away while packets are sitting in nfqueue refer to: - helper, this can be an issue on module removal. - timeout policy, nfnetlink_cttimeout might remove it. The use of templates with zone and event cache filter are safe, since this just copies values. Flush these enqueued packets in case the template rule gets removed.
https://git.kernel.org/stable/c/f62a218a946b19bb59abdd5361da85fa4606b96b
https://git.kernel.org/stable/c/d2d0bae0c9a2a17b6990a2966f5cdce0813d6256
https://git.kernel.org/stable/c/cb549925875fa06dd155e49db4ac2c5044c30f9c
https://git.kernel.org/stable/c/777d02efe3d630cca4c1b63962cec17c57711325
https://git.kernel.org/stable/c/63b8097cea1923fe82cd598068d0796da8c015ec
https://git.kernel.org/stable/c/19a230dec6bb8928e3f96387f9085cf2c79bcef9