Race condition in the __kvm_migrate_pit_timer function in arch/x86/kvm/i8254.c in the KVM subsystem in the Linux kernel through 3.17.2 allows guest OS users to cause a denial of service (host OS crash) by leveraging incorrect PIT emulation.
http://rhn.redhat.com/errata/RHSA-2015-0126.html
http://rhn.redhat.com/errata/RHSA-2015-0284.html
http://rhn.redhat.com/errata/RHSA-2015-0869.html
http://www.debian.org/security/2014/dsa-3060
http://www.openwall.com/lists/oss-security/2014/10/24/9
http://www.ubuntu.com/usn/USN-2394-1
http://www.ubuntu.com/usn/USN-2417-1
http://www.ubuntu.com/usn/USN-2418-1
http://www.ubuntu.com/usn/USN-2491-1
https://bugzilla.redhat.com/show_bug.cgi?id=1144878
https://github.com/torvalds/linux/commit/2febc839133280d5a5e8e1179c94ea674489dae2
Source: MITRE
Published: 2014-11-10
Updated: 2020-08-12
Type: CWE-362
Base Score: 4.7
Vector: AV:L/AC:M/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 3.4
Severity: MEDIUM
Base Score: 4.7
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1
Severity: MEDIUM