Oracle Linux: CVE-2020-14416: ELSA-2020-5801: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

In the Linux kernel before 5.4.16, a race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c.
A use-after-free flaw was found in slcan_write_wakeup in drivers/net/can/slcan.c in the serial CAN module slcan. A race condition occurs when communicating with can using slcan between the write (scheduling the transmit) and closing (flushing out any pending queues) the SLCAN channel. This flaw allows a local attacker with special user or root privileges to cause a denial of service or a kernel information leak. The highest threat from this vulnerability is to system availability.