In the Linux kernel, the following vulnerability has been resolved:

net: sched: fix possible refcount leak in tc_new_tfilter()

tfilter_put need to be called to put the refount got by tp->ops->get to
avoid possible refcount leak when chain->tmplt_ops != NULL and
chain->tmplt_ops != tp->ops.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-48639
• https://git.kernel.org/stable/c/0559d91ee3a2cd81b15ad5cd507539d6da867f88
• https://git.kernel.org/stable/c/8844c750eeb03452e2b3319c27a526f447b82596
• https://git.kernel.org/stable/c/903f7d322c17d8e306d766404b4604e81653902a
• https://git.kernel.org/stable/c/c2e1cfefcac35e0eea229e148c8284088ce437b5
• https://git.kernel.org/stable/c/f8162aed962be8fa07445b2b5928e84ab40dd8d7