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Ubuntu: (Multiple Advisories) (CVE-2018-14678): Linux kernel (HWE) vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2018-14678): Linux kernel (HWE) vulnerabilities

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
07/28/2018
Created
04/22/2019
Added
04/09/2019
Modified
09/12/2020

Description

An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1010-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1029-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1031-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1033-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1035-aws
  • ubuntu-upgrade-linux-image-4-15-0-1035-oem
  • ubuntu-upgrade-linux-image-4-15-0-1041-azure
  • ubuntu-upgrade-linux-image-4-15-0-47-generic
  • ubuntu-upgrade-linux-image-4-15-0-47-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-47-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-47-snapdragon
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-hwe
  • ubuntu-upgrade-linux-image-azure
  • 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-oracle
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-16-04

References

  • USN-3821-1
  • USN-3821-2
  • USN-3879-1
  • USN-3879-2
  • USN-3930-1
  • USN-3930-2
  • USN-3931-1
  • USN-3931-2
  • USN-3932-1
  • USN-3932-2
  • USN-3933-1
  • USN-3933-2
  • DSA-4308
  • CVE-2018-14678
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