USN-4135-1: Linux kernel vulnerabilities
18 September 2019
Several security issues were fixed in the Linux kernel.
Releases
Packages
- linux - Linux kernel
- linux-aws - Linux kernel for Amazon Web Services (AWS) systems
- linux-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-azure - Linux kernel for Microsoft Azure Cloud systems
- linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke-4.15 - Linux kernel for Google Container Engine (GKE) systems
- linux-gke-5.0 - Linux kernel for Google Container Engine (GKE) systems
- linux-hwe - Linux hardware enablement (HWE) kernel
- linux-kvm - Linux kernel for cloud environments
- linux-oem - Linux kernel for OEM processors
- linux-oracle - Linux kernel for Oracle Cloud systems
- linux-raspi2 - Linux kernel for Raspberry Pi 2
- linux-snapdragon - Linux kernel for Snapdragon processors
Details
Peter Pi discovered a buffer overflow in the virtio network backend
(vhost_net) implementation in the Linux kernel. An attacker in a guest may
be able to use this to cause a denial of service (host OS crash) or
possibly execute arbitrary code in the host OS. (CVE-2019-14835)
It was discovered that the Linux kernel on PowerPC architectures did not
properly handle Facility Unavailable exceptions in some situations. A local
attacker could use this to expose sensitive information. (CVE-2019-15030)
It was discovered that the Linux kernel on PowerPC architectures did not
properly handle exceptions on interrupts in some situations. A local
attacker could use this to expose sensitive information. (CVE-2019-15031)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 19.04
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linux-image-5.0.0-1016-aws
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5.0.0-1016.18
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linux-image-5.0.0-1017-gcp
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5.0.0-1017.17
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linux-image-5.0.0-1017-kvm
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5.0.0-1017.18
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linux-image-5.0.0-1017-raspi2
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5.0.0-1017.17
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linux-image-5.0.0-1020-azure
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5.0.0-1020.21
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linux-image-5.0.0-1021-snapdragon
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5.0.0-1021.22
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linux-image-5.0.0-29-generic
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5.0.0-29.31
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linux-image-5.0.0-29-generic-lpae
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5.0.0-29.31
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linux-image-5.0.0-29-lowlatency
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5.0.0-29.31
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linux-image-aws
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5.0.0.1016.17
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linux-image-azure
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5.0.0.1020.19
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linux-image-gcp
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5.0.0.1017.43
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linux-image-generic
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5.0.0.29.30
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linux-image-generic-lpae
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5.0.0.29.30
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linux-image-gke
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5.0.0.1017.43
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linux-image-kvm
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5.0.0.1017.17
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linux-image-lowlatency
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5.0.0.29.30
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linux-image-raspi2
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5.0.0.1017.14
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linux-image-snapdragon
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5.0.0.1021.14
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linux-image-virtual
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5.0.0.29.30
Ubuntu 18.04
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linux-image-4.15.0-1025-oracle
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4.15.0-1025.28
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linux-image-4.15.0-1044-gcp
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4.15.0-1044.70
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linux-image-4.15.0-1044-gke
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4.15.0-1044.46
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linux-image-4.15.0-1046-kvm
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4.15.0-1046.46
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linux-image-4.15.0-1047-raspi2
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4.15.0-1047.51
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linux-image-4.15.0-1050-aws
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4.15.0-1050.52
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linux-image-4.15.0-1056-oem
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4.15.0-1056.65
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linux-image-4.15.0-1064-snapdragon
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4.15.0-1064.71
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linux-image-4.15.0-64-generic
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4.15.0-64.73
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linux-image-4.15.0-64-generic-lpae
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4.15.0-64.73
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linux-image-4.15.0-64-lowlatency
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4.15.0-64.73
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linux-image-5.0.0-1017-gke
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5.0.0-1017.17~18.04.1
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linux-image-5.0.0-1020-azure
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5.0.0-1020.21~18.04.1
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linux-image-5.0.0-29-generic
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5.0.0-29.31~18.04.1
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linux-image-5.0.0-29-generic-lpae
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5.0.0-29.31~18.04.1
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linux-image-5.0.0-29-lowlatency
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5.0.0-29.31~18.04.1
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linux-image-aws
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4.15.0.1050.49
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linux-image-azure
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5.0.0.1020.30
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linux-image-gcp
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4.15.0.1044.70
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linux-image-generic
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4.15.0.64.66
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linux-image-generic-hwe-18.04
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5.0.0.29.86
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linux-image-generic-lpae
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4.15.0.64.66
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linux-image-generic-lpae-hwe-18.04
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5.0.0.29.86
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linux-image-gke
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4.15.0.1044.47
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linux-image-gke-4.15
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4.15.0.1044.47
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linux-image-gke-5.0
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5.0.0.1017.7
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linux-image-kvm
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4.15.0.1046.46
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linux-image-lowlatency
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4.15.0.64.66
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linux-image-lowlatency-hwe-18.04
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5.0.0.29.86
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linux-image-oem
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4.15.0.1056.60
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linux-image-oracle
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4.15.0.1025.28
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linux-image-raspi2
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4.15.0.1047.45
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linux-image-snapdragon
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4.15.0.1064.67
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linux-image-snapdragon-hwe-18.04
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5.0.0.29.86
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linux-image-virtual
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4.15.0.64.66
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linux-image-virtual-hwe-18.04
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5.0.0.29.86
Ubuntu 16.04
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linux-image-4.15.0-1025-oracle
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4.15.0-1025.28~16.04.1
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linux-image-4.15.0-1044-gcp
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4.15.0-1044.46
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linux-image-4.15.0-1050-aws
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4.15.0-1050.52~16.04.1
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linux-image-4.15.0-1059-azure
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4.15.0-1059.64
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linux-image-4.15.0-64-generic
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4.15.0-64.73~16.04.1
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linux-image-4.15.0-64-generic-lpae
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4.15.0-64.73~16.04.1
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linux-image-4.15.0-64-lowlatency
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4.15.0-64.73~16.04.1
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linux-image-4.4.0-1058-kvm
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4.4.0-1058.65
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linux-image-4.4.0-1094-aws
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4.4.0-1094.105
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linux-image-4.4.0-1122-raspi2
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4.4.0-1122.131
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linux-image-4.4.0-1126-snapdragon
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4.4.0-1126.132
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linux-image-4.4.0-164-generic
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4.4.0-164.192
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linux-image-4.4.0-164-generic-lpae
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4.4.0-164.192
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linux-image-4.4.0-164-lowlatency
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4.4.0-164.192
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linux-image-4.4.0-164-powerpc-e500mc
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4.4.0-164.192
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linux-image-4.4.0-164-powerpc-smp
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4.4.0-164.192
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linux-image-4.4.0-164-powerpc64-emb
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4.4.0-164.192
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linux-image-4.4.0-164-powerpc64-smp
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4.4.0-164.192
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linux-image-aws
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4.4.0.1094.98
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linux-image-aws-hwe
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4.15.0.1050.50
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linux-image-azure
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4.15.0.1059.62
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linux-image-gcp
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4.15.0.1044.58
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linux-image-generic
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4.4.0.164.172
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linux-image-generic-hwe-16.04
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4.15.0.64.84
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linux-image-generic-lpae
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4.4.0.164.172
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linux-image-generic-lpae-hwe-16.04
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4.15.0.64.84
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linux-image-gke
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4.15.0.1044.58
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linux-image-kvm
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4.4.0.1058.58
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linux-image-lowlatency
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4.4.0.164.172
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linux-image-lowlatency-hwe-16.04
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4.15.0.64.84
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linux-image-oem
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4.15.0.64.84
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linux-image-oracle
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4.15.0.1025.18
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linux-image-powerpc-e500mc
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4.4.0.164.172
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linux-image-powerpc-smp
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4.4.0.164.172
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linux-image-powerpc64-emb
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4.4.0.164.172
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linux-image-powerpc64-smp
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4.4.0.164.172
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linux-image-raspi2
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4.4.0.1122.122
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linux-image-snapdragon
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4.4.0.1126.118
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linux-image-virtual
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4.4.0.164.172
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linux-image-virtual-hwe-16.04
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4.15.0.64.84
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.