drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the relevance of this report because the failure can only occur for physically proximate attackers who unplug SAS Host Bus Adapter cables
https://usn.ubuntu.com/3754-1/
https://usn.ubuntu.com/3696-2/
https://usn.ubuntu.com/3696-1/
https://usn.ubuntu.com/3678-4/
https://usn.ubuntu.com/3678-3/
https://usn.ubuntu.com/3678-2/
https://usn.ubuntu.com/3678-1/
https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html
https://github.com/torvalds/linux/commit/318aaf34f1179b39fa9c30fa0f3288b645beee39