Debian LTS: DLA-2843-1 Moderate: Multiple Kernel Issues Security Fix

A flaw was found in the driver for Atheros IEEE 802.11n family of
chipsets (ath9k) allowing information disclosure.

CVE-2020-16119

Hadar Manor reported a use-after-free in the DCCP protocol
implementation in the Linux kernel. A local attacker can take
advantage of this flaw to cause a denial of service or potentially
to execute arbitrary code.

CVE-2021-0920

A race condition was discovered in the local sockets (AF_UNIX)
subsystem, which could lead to a use-after-free. A local user
could exploit this for denial of service (memory corruption or
crash), or possibly for privilege escalation.

CVE-2021-3612

Murray McAllister reported a flaw in the joystick input subsystem.
A local user permitted to access a joystick device could exploit
this to read and write out-of-bounds in the kernel, which could
be used for privilege escalation.

CVE-2021-3653

Maxim Levitsky discovered a vulnerability in the KVM hypervisor