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

ravb: Fix use-after-free issue in ravb_tx_timeout_work()

The ravb_stop() should call cancel_work_sync(). Otherwise,
ravb_tx_timeout_work() is possible to use the freed priv after
ravb_remove() was called like below:

CPU0			CPU1
			ravb_tx_timeout()
ravb_remove()
unregister_netdev()
free_netdev(ndev)
// free priv
			ravb_tx_timeout_work()
			// use priv

unregister_netdev() will call .ndo_stop() so that ravb_stop() is
called. And, after phy_stop() is called, netif_carrier_off()
is also called. So that .ndo_tx_timeout() will not be called
after phy_stop().

Linux https://git.kernel.org/stable/c/105abd68ad8f781985113aee2e92e0702b133705 [No types assigned]

Linux https://git.kernel.org/stable/c/3971442870713de527684398416970cf025b4f89 [No types assigned]

Linux https://git.kernel.org/stable/c/616761cf9df9af838c0a1a1232a69322a9eb67e6 [No types assigned]

Linux https://git.kernel.org/stable/c/65d34cfd4e347054eb4193bc95d9da7eaa72dee5 [No types assigned]

Linux https://git.kernel.org/stable/c/6f6fa8061f756aedb93af12a8a5d3cf659127965 [No types assigned]

Linux https://git.kernel.org/stable/c/db9aafa19547833240f58c2998aed7baf414dc82 [No types assigned]