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Bug 636380 (CVE-2017-12188) - kernel: KVM: MMU potential stack buffer overrun during page walks (CVE-2017-12188)
Summary: kernel: KVM: MMU potential stack buffer overrun during page walks (CVE-2017-1...
Alias: CVE-2017-12188
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: Normal critical (vote)
Assignee: Gentoo Kernel Security
Depends on:
Reported: 2017-11-03 14:25 UTC by GLSAMaker/CVETool Bot
Modified: 2022-03-26 00:29 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description GLSAMaker/CVETool Bot gentoo-dev 2017-11-03 14:25:23 UTC
CVE-2017-12188 (
  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."
Comment 1 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-03-26 00:29:24 UTC
Fixed in 4.9.57, 4.14