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TITLE:
Linux Kernel KVM MCE "KVM_X86_SETUP_MCE" Buffer Overflow

SECUNIA ADVISORY ID:
SA37357

VERIFY ADVISORY:
http://secunia.com/advisories/37357/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service) and potentially gain escalated privileges.

The vulnerability is caused due to an error within the
"kvm_vcpu_ioctl_x86_setup_mce()" function in arch/x86/kvm/x86.c. This
can be exploited to corrupt kernel memory by e.g. sending a specially
crafted "KVM_X86_SETUP_MCE" IOCTL.

SOLUTION:
Fixed in version 2.6.32.-rc7.

PROVIDED AND/OR DISCOVERED BY:
Disclosed in a GIT commit.

ORIGINAL ADVISORY:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a9e38c3e01ad242fe2a625354cf065c34b01e3aa

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