Vulnerability CVE-2017-12188


Published: 2017-10-11

Description:
arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service (incorrect index during page walking, and host OS crash), aka an "MMU potential stack buffer overrun."

 References:
https://bugzilla.redhat.com/show_bug.cgi?id=1500380
https://patchwork.kernel.org/patch/9996579/
https://patchwork.kernel.org/patch/9996587/

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