Linux kernel is vulnerable to denial of service (DoS) attacks. The vulnerability exists in the Linux kernel Virtualization Module (CONFIG_KVM) for the Intel processor family (CONFIG_KVM_INTEL) when a guest was to flood the I/O port 0x80 with write requests leading to a crash in the host kernel.
www.openwall.com/lists/oss-security/2017/12/04/2
www.securityfocus.com/bid/102038
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access.redhat.com/errata/RHSA-2019:1170
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access.redhat.com/security/cve/CVE-2017-13305
access.redhat.com/security/cve/CVE-2017-15274
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bugzilla.redhat.com/show_bug.cgi?id=1292927
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bugzilla.redhat.com/show_bug.cgi?id=1430418
bugzilla.redhat.com/show_bug.cgi?id=1448770
bugzilla.redhat.com/show_bug.cgi?id=1452589
bugzilla.redhat.com/show_bug.cgi?id=1462329
bugzilla.redhat.com/show_bug.cgi?id=1500894
bugzilla.redhat.com/show_bug.cgi?id=1503749
bugzilla.redhat.com/show_bug.cgi?id=1506255
bugzilla.redhat.com/show_bug.cgi?id=1507270
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usn.ubuntu.com/3583-1/
usn.ubuntu.com/3583-2/
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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