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CentOS Linux: CVE-2017-2596: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)

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CentOS Linux: CVE-2017-2596: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
02/06/2017
Created
08/29/2019
Added
08/28/2019
Modified
05/25/2023

Description

The nested_vmx_check_vmptr function in arch/x86/kvm/vmx.c in the Linux kernel through 4.9.8 improperly emulates the VMXON instruction, which allows KVM L1 guest OS users to cause a denial of service (host OS memory consumption) by leveraging the mishandling of page references.

Solution(s)

  • centos-upgrade-kernel
  • centos-upgrade-kernel-rt

References

  • 95878
  • DSA-3791
  • CVE-2017-2596
  • RHSA-2017:1842
  • RHSA-2017:2077

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