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SYNTHESIS OF THE VULNERABILITY

An attacker can use several vulnerabilities of KVM of the Linux
kernel.

Impacted products: Debian, Linux, RHEL, Ubuntu

Severity: 2/4

Creation date: 27/10/2014

DESCRIPTION OF THE VULNERABILITY

Several vulnerabilities have been announced in KVM.

A privileged attacker in a guest system can use the machine
instruction WRMSR, in order to trigger a denial of service.
[severity:1/4; CVE-2014-3610]

A attacker in a guest system can exploit a race condition, in
order to trigger a denial of service. [severity:2/4; CVE-2014-3611]

A attacker in a guest system can use the INVEPT instruction, in
order to interrupt the virtual machine and so trigger a denial of
service. [severity:1/4; CVE-2014-3645]

A attacker in a guest system can use the INVVPID instruction, in
order to interrupt the virtual machine and so trigger a denial of
service. [severity:1/4; CVE-2014-3646]

A attacker in a guest system can use jumps with non canonical
addresses, in order to distub the virtual machine and so trigger a
denial of service. [severity:2/4; CVE-2014-3647]

The vulnerability described in the bulletin VIGILANCE-VUL-15255
has not been rightly fixed by the previous patches
(VIGILANCE-SOL-36337). So, the vulnerability remains applicable.
[severity:1/4; CVE-2014-3601, CVE-2014-8369]

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Linux-kernel-multiple-vulnerabilities-of-KVM-15541