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CentOS Linux: CVE-2018-10853: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)

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CentOS Linux: CVE-2018-10853: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
09/11/2018
Created
08/29/2019
Added
08/28/2019
Modified
05/25/2023

Description

A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.

Solution(s)

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

References

  • CVE-2018-10853
  • RHSA-2019:2029
  • RHSA-2019:2043
  • RHSA-2020:0036
  • RHSA-2020:0103
  • RHSA-2020:0179

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