The Linux Kernel 2.6.32 and later are affected by a denial of service, by flooding the diagnostic port 0x80 an exception can be triggered leading to a kernel panic.
www.openwall.com/lists/oss-security/2017/12/04/2
www.securityfocus.com/bid/102038
access.redhat.com/errata/RHSA-2018:0676
access.redhat.com/errata/RHSA-2018:1062
access.redhat.com/errata/RHSA-2019:1170
access.redhat.com/security/cve/cve-2017-1000407
lists.debian.org/debian-lts-announce/2017/12/msg00004.html
usn.ubuntu.com/3583-1/
usn.ubuntu.com/3583-2/
usn.ubuntu.com/3617-1/
usn.ubuntu.com/3617-2/
usn.ubuntu.com/3619-1/
usn.ubuntu.com/3619-2/
usn.ubuntu.com/3632-1/
www.debian.org/security/2017/dsa-4073
www.debian.org/security/2018/dsa-4082
www.spinics.net/lists/kvm/msg159809.html