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Ubuntu: (Multiple Advisories) (CVE-2018-10853): Linux kernel (HWE) vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2018-10853): Linux kernel (HWE) vulnerabilities

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
08/17/2018
Created
03/19/2019
Added
10/09/2018
Modified
08/25/2021

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)

  • ubuntu-upgrade-linux-image-4-15-0-1021-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1021-oem
  • ubuntu-upgrade-linux-image-4-15-0-1023-aws
  • ubuntu-upgrade-linux-image-4-15-0-1023-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1024-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-36-generic
  • ubuntu-upgrade-linux-image-4-15-0-36-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-36-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-36-snapdragon
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-hwe-16-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-16-04
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon

References

  • USN-3775-1
  • USN-3775-2
  • USN-3776-1
  • USN-3776-2
  • USN-3777-1
  • USN-3777-2
  • USN-3777-3
  • USN-3779-1
  • CVE-2018-10853
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