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virt: guest to host DoS by triggering an infinite loop in microcode via #AC exception

🗓️ 07 Jan 2016 13:52:46Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 1 Views

This allows a guest to cause host denial of service by triggering infinite microcode loop via alignment check exception.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
BDU FSTEC		The vulnerability of Xen hypervisors, which allows a malicious actor to trigger a service failure
14 Dec 201500:00
–bdu_fstec
Tenable Nessus		CentOS 7 : kernel (CESA-2015:2552)
10 Dec 201500:00
–nessus
Tenable Nessus		CentOS 6 : kernel (CESA-2015:2636)
16 Dec 201500:00
–nessus
Tenable Nessus		Citrix XenServer Multiple Infinite Loop Guest-to-Host DoS (CTX202583)
23 Nov 201500:00
–nessus
Tenable Nessus		Debian DLA-479-1 : xen security update
18 May 201600:00
–nessus
Tenable Nessus		Debian DSA-3396-1 : linux - security update
11 Nov 201500:00
–nessus
Tenable Nessus		Debian DSA-3414-1 : xen - security update
10 Dec 201500:00
–nessus
Tenable Nessus		Debian DSA-3454-1 : virtualbox - security update
28 Jan 201600:00
–nessus
Tenable Nessus		EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1484)
13 May 201900:00
–nessus
Tenable Nessus		EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1488)
13 May 201900:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux6.4x86_64kernel0:2.6.32-358.69.1.el6kernel-0:2.6.32-358.69.1.el6.x86_64.rpm
Red Hat Enterprise Linux6.4x86_64kernel-debug0:2.6.32-358.69.1.el6kernel-debug-0:2.6.32-358.69.1.el6.x86_64.rpm
Red Hat Enterprise Linux6.4x86_64kernel-debug-debuginfo0:2.6.32-358.69.1.el6kernel-debug-debuginfo-0:2.6.32-358.69.1.el6.x86_64.rpm
Red Hat Enterprise Linux6.4x86_64kernel-debug-devel0:2.6.32-358.69.1.el6kernel-debug-devel-0:2.6.32-358.69.1.el6.x86_64.rpm
Red Hat Enterprise Linux6.4x86_64kernel-debuginfo0:2.6.32-358.69.1.el6kernel-debuginfo-0:2.6.32-358.69.1.el6.x86_64.rpm
Red Hat Enterprise Linux6.4x86_64kernel-debuginfo-common-x86_640:2.6.32-358.69.1.el6kernel-debuginfo-common-x86_64-0:2.6.32-358.69.1.el6.x86_64.rpm
Red Hat Enterprise Linux6.4x86_64kernel-devel0:2.6.32-358.69.1.el6kernel-devel-0:2.6.32-358.69.1.el6.x86_64.rpm
Red Hat Enterprise Linux6.4anykernel-doc0:2.6.32-358.69.1.el6kernel-doc-0:2.6.32-358.69.1.el6.noarch.rpm
Red Hat Enterprise Linux6.4anykernel-firmware0:2.6.32-358.69.1.el6kernel-firmware-0:2.6.32-358.69.1.el6.noarch.rpm
Red Hat Enterprise Linux6.4x86_64kernel-headers0:2.6.32-358.69.1.el6kernel-headers-0:2.6.32-358.69.1.el6.x86_64.rpm
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21 Nov 2025 17:54Current
6.7Medium risk
Vulners AI Score6.7
CVSS 24.9
EPSS0.00096
CWE-835
guest to hostdenial of servicealignment check exceptionmicrocode loopvirtualization
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