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Oracle Linux: (CVE-2018-10853) ELSA-2019-2029: kernel security, bug fix, and enhancement update

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Oracle Linux: (CVE-2018-10853) ELSA-2019-2029: kernel security, bug fix, and enhancement update

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
08/17/2018
Created
08/15/2019
Added
08/15/2019
Modified
08/15/2019

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)

  • oracle-linux-upgrade-kernel

References

  • ELSA-2019-2029
  • USN-3777-1
  • USN-3777-2
  • CVE-2018-10853

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