Denial of Service Vulnerability in KVM Emulation of syscall Instruction

CVE-2012-0045 · MEDIUM Severity

AV:L/AC:M/AU:N/C:N/I:N/A:C

The em_syscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 (aka syscall) opcode, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application, as demonstrated by an NASM file.

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