kvm: arch/x86/kvm/x86.c: reading uninitialized stack memory

arch/x86/kvm/x86.c in the Linux kernel before 2.6.36.2 does not initialize certain structure members, which allows local users to obtain potentially sensitive information from kernel stack memory via read operations on the /dev/kvm device...

kvm: vmx null pointer dereference

The Hypervisor aka rhev-hypervisor in Red Hat Enterprise Virtualization RHEV 2.2, and KVM 83, when the Intel VT-x extension is enabled, allows guest OS users to cause a denial of service NULL pointer dereference and host OS crash via vectors related to instruction emulation...

KVM: Check cpl before emulating debug register access

The handledr function in arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 2.6.31.1 does not properly verify the Current Privilege Level CPL before accessing a debug register, which allows guest OS users to cause a denial of service trap on the host OS via a crafted application...

kvm: emulator privilege escalation

The x86 emulator in KVM 83 does not use the Current Privilege Level CPL and I/O Privilege Level IOPL in determining the memory access available to CPL3 code, which allows guest OS users to cause a denial of service guest OS crash or gain privileges on the guest OS by leveraging access to a 1 IO...

kernel: KVM: x86 emulator: limit instructions to 15 bytes

The doinsnfetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service increased scheduling...

PT-2009-5910 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 2.6.31.4 Description: The issue is related to an integer overflow in the kvm dev ioctl get supported cpuid function, which can be triggered by a local user via a KVM GET SUPPORTED CPUID request to the kvm arch d...

PT-2011-5236 · Opensuse +4 · Systemtap-Client-Debuginfo +17

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 3.2.24 openSUSE systemtap-runtime-debuginfo affected versions not specified openSUSE systemtap-sdt-devel affected versions not specified openSUSE systemtap affected versions not specified openSUSE libvmtools0...