CVE-2017-12188

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

http://www.securityfocus.com/bid/101267

https://access.redhat.com/errata/RHSA-2018:0395

https://access.redhat.com/errata/RHSA-2018:0412

https://bugzilla.redhat.com/show_bug.cgi?id=1500380

https://patchwork.kernel.org/patch/9996579/

https://patchwork.kernel.org/patch/9996587/

Details

Risk Information

CVSS v2

CVSS v3