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Ubuntu: (Multiple Advisories) (CVE-2018-16884): Linux kernel (HWE) vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2018-16884): Linux kernel (HWE) vulnerabilities

Severity
7
CVSS
(AV:A/AC:L/Au:S/C:P/I:P/A:C)
Published
12/18/2018
Created
04/22/2019
Added
04/09/2019
Modified
07/06/2021

Description

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1013-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1032-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1034-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1036-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1038-oem
  • ubuntu-upgrade-linux-image-4-15-0-1039-aws
  • ubuntu-upgrade-linux-image-4-15-0-1045-azure
  • ubuntu-upgrade-linux-image-4-15-0-1053-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-50-generic
  • ubuntu-upgrade-linux-image-4-15-0-50-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-50-lowlatency
  • ubuntu-upgrade-linux-image-4-18-0-1011-gcp
  • ubuntu-upgrade-linux-image-4-18-0-1012-kvm
  • ubuntu-upgrade-linux-image-4-18-0-1014-raspi2
  • ubuntu-upgrade-linux-image-4-18-0-1016-aws
  • ubuntu-upgrade-linux-image-4-18-0-1018-azure
  • ubuntu-upgrade-linux-image-4-18-0-20-generic
  • ubuntu-upgrade-linux-image-4-18-0-20-generic-lpae
  • ubuntu-upgrade-linux-image-4-18-0-20-lowlatency
  • ubuntu-upgrade-linux-image-4-18-0-20-snapdragon
  • ubuntu-upgrade-linux-image-4-4-0-1040-aws
  • ubuntu-upgrade-linux-image-4-4-0-1043-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1079-aws
  • ubuntu-upgrade-linux-image-4-4-0-1106-raspi2
  • ubuntu-upgrade-linux-image-4-4-0-1110-snapdragon
  • ubuntu-upgrade-linux-image-4-4-0-144-generic
  • ubuntu-upgrade-linux-image-4-4-0-144-generic-lpae
  • ubuntu-upgrade-linux-image-4-4-0-144-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-144-powerpc-e500mc
  • ubuntu-upgrade-linux-image-4-4-0-144-powerpc-smp
  • ubuntu-upgrade-linux-image-4-4-0-144-powerpc64-emb
  • ubuntu-upgrade-linux-image-4-4-0-144-powerpc64-smp
  • ubuntu-upgrade-linux-image-4-4-0-145-generic
  • ubuntu-upgrade-linux-image-4-4-0-145-generic-lpae
  • ubuntu-upgrade-linux-image-4-4-0-145-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-145-powerpc-e500mc
  • ubuntu-upgrade-linux-image-4-4-0-145-powerpc-smp
  • ubuntu-upgrade-linux-image-4-4-0-145-powerpc64-emb
  • ubuntu-upgrade-linux-image-4-4-0-145-powerpc64-smp
  • ubuntu-upgrade-linux-image-aws
  • 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-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-16-04
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-lpae-lts-xenial
  • ubuntu-upgrade-linux-image-generic-lts-xenial
  • 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-lowlatency-hwe-18-04
  • ubuntu-upgrade-linux-image-lowlatency-lts-xenial
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-powerpc-e500mc
  • ubuntu-upgrade-linux-image-powerpc-e500mc-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc-smp
  • ubuntu-upgrade-linux-image-powerpc-smp-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-emb
  • ubuntu-upgrade-linux-image-powerpc64-emb-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-smp
  • ubuntu-upgrade-linux-image-powerpc64-smp-lts-xenial
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon
  • ubuntu-upgrade-linux-image-snapdragon-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-16-04
  • ubuntu-upgrade-linux-image-virtual-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual-lts-xenial

References

  • USN-3932-1
  • USN-3932-2
  • USN-3977-1
  • USN-3977-2
  • USN-3977-3
  • USN-3978-1
  • USN-3979-1
  • USN-3980-1
  • USN-3980-2
  • USN-3981-1
  • USN-3981-2
  • USN-3982-1
  • USN-3982-2
  • USN-3983-1
  • USN-3983-2
  • USN-3984-1
  • USN-3985-1
  • USN-3985-2
  • USN-4076-1
  • USN-4095-1
  • CVE-2018-16884
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