In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Wait for io return on terminate rport System crash due to use after free. Current code allows terminate_rport_io to exit before making sure all IOs has returned. For FCP-2 device, IO's can hang on in HW because driver has not tear down the session in FW at first sign of cable pull. When dev_loss_tmo timer pops, terminate_rport_io is called and upper layer is about to free various resources. Terminate_rport_io trigger qla to do the final cleanup, but the cleanup might not be fast enough where it leave qla still holding on to the same resource. Wait for IO's to return to upper layer before resources are freed.
https://git.kernel.org/stable/c/fc0cba0c7be8261a1625098bd1d695077ec621c9
https://git.kernel.org/stable/c/d25fded78d88e1515439b3ba581684d683e0b6ab
https://git.kernel.org/stable/c/a9fe97fb7b4ee21bffb76f2acb05769bad27ae70
https://git.kernel.org/stable/c/90770dad1eb30967ebd8d37d82830bcf270b3293
https://git.kernel.org/stable/c/8a55556cd7e0220486163b1285ce11a8be2ce5fa
https://git.kernel.org/stable/c/5bcdaafd92be6035ddc77fa76650cf9dd5b864c4
https://git.kernel.org/stable/c/4647d2e88918a078359d1532d90c417a38542c9e
https://git.kernel.org/stable/c/079c8264ed9fea8cbcac01ad29040f901cbc3692