kernel: kvm: reporting emulation failures to userspace

It was found that reporting emulation failures to user space could lead to either a local CVE-2014-7842 or a L2-L1 CVE-2010-5313 denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. Please note that on certain...

USN-2804-1: Linux kernel (Trusty HWE) vulnerability

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux kernel did not properly catch Alignment Check exceptions. An attacker in a guest virtual machine could use this to cause a denial of service system crash in the host OS...

CVE-2013-4587

Array index error in the kvmvmioctlcreatevcpu function in virt/kvm/kvmmain.c in the KVM subsystem in the Linux kernel through 3.12.5 allows local users to gain privileges via a large id value...

Ubuntu 10.04 LTS : linux-ec2 vulnerabilities (USN-2037-1)

A flaw was discovered in the Linux kernel's KVM kernel virtual machine. An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. CVE-2012-2121 Multiple integer overflow flaws where discovered in the Alchemy LCD frame- buffer drivers in the Linux...

CVE-2012-4461

The KVM subsystem in the Linux kernel before 3.6.9, when running on hosts that use qemu userspace without XSAVE, allows local users to cause a denial of service kernel OOPS by using the KVMSETSREGS ioctl to set the X86CR4OSXSAVE bit in the guest cr4 register, then calling the KVMRUN ioctl...

CVE-2010-3698

The KVM implementation in the Linux kernel before 2.6.36 does not properly reload the FS and GS segment registers, which allows host OS users to cause a denial of service host OS crash via a KVMRUN ioctl call in conjunction with a modified Local Descriptor Table LDT...