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AUSCERT External Security Bulletin Redistribution
ESB-2019.3536
USN-4135-1: Linux kernel vulnerabilities
19 September 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-15031 CVE-2019-15030 CVE-2019-14835
Original Bulletin:
https://usn.ubuntu.com/4135-1/
https://usn.ubuntu.com/4135-2/
Comment: This advisory references vulnerabilities in the Linux kernel that
also affect distributions other than Ubuntu. It is recommended that
administrators running Linux check for an updated version of the
kernel for their system.
This bulletin contains two (2) Ubuntu security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
USN-4135-1: Linux kernel vulnerabilities
18 September 2019
linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-gke-5.0, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
Several security issues were fixed in the Linux kernel.
Software Description
o linux - Linux kernel
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-azure - Linux kernel for Microsoft Azure Cloud systems
o linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
o linux-kvm - Linux kernel for cloud environments
o linux-raspi2 - Linux kernel for Raspberry Pi 2
o linux-snapdragon - Linux kernel for Snapdragon processors
o linux-gke-4.15 - Linux kernel for Google Container Engine (GKE) systems
o linux-gke-5.0 - Linux kernel for Google Container Engine (GKE) systems
o linux-hwe - Linux hardware enablement (HWE) kernel
o linux-oem - Linux kernel for OEM processors
o linux-oracle - Linux kernel for Oracle Cloud systems
o linux-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
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
linux-image-5.0.0-1016-aws - 5.0.0-1016.18
linux-image-5.0.0-1017-gcp - 5.0.0-1017.17
linux-image-5.0.0-1017-kvm - 5.0.0-1017.18
linux-image-5.0.0-1017-raspi2 - 5.0.0-1017.17
linux-image-5.0.0-1020-azure - 5.0.0-1020.21
linux-image-5.0.0-1021-snapdragon - 5.0.0-1021.22
linux-image-5.0.0-29-generic - 5.0.0-29.31
linux-image-5.0.0-29-generic-lpae - 5.0.0-29.31
linux-image-5.0.0-29-lowlatency - 5.0.0-29.31
linux-image-aws - 5.0.0.1016.17
linux-image-azure - 5.0.0.1020.19
linux-image-gcp - 5.0.0.1017.43
linux-image-generic - 5.0.0.29.30
linux-image-generic-lpae - 5.0.0.29.30
linux-image-gke - 5.0.0.1017.43
linux-image-kvm - 5.0.0.1017.17
linux-image-lowlatency - 5.0.0.29.30
linux-image-raspi2 - 5.0.0.1017.14
linux-image-snapdragon - 5.0.0.1021.14
linux-image-virtual - 5.0.0.29.30
Ubuntu 18.04 LTS
linux-image-4.15.0-1025-oracle - 4.15.0-1025.28
linux-image-4.15.0-1044-gcp - 4.15.0-1044.70
linux-image-4.15.0-1044-gke - 4.15.0-1044.46
linux-image-4.15.0-1046-kvm - 4.15.0-1046.46
linux-image-4.15.0-1047-raspi2 - 4.15.0-1047.51
linux-image-4.15.0-1050-aws - 4.15.0-1050.52
linux-image-4.15.0-1056-oem - 4.15.0-1056.65
linux-image-4.15.0-1064-snapdragon - 4.15.0-1064.71
linux-image-4.15.0-64-generic - 4.15.0-64.73
linux-image-4.15.0-64-generic-lpae - 4.15.0-64.73
linux-image-4.15.0-64-lowlatency - 4.15.0-64.73
linux-image-5.0.0-1017-gke - 5.0.0-1017.17~18.04.1
linux-image-5.0.0-1020-azure - 5.0.0-1020.21~18.04.1
linux-image-5.0.0-29-generic - 5.0.0-29.31~18.04.1
linux-image-5.0.0-29-generic-lpae - 5.0.0-29.31~18.04.1
linux-image-5.0.0-29-lowlatency - 5.0.0-29.31~18.04.1
linux-image-aws - 4.15.0.1050.49
linux-image-azure - 5.0.0.1020.30
linux-image-gcp - 4.15.0.1044.70
linux-image-generic - 4.15.0.64.66
linux-image-generic-hwe-18.04 - 5.0.0.29.86
linux-image-generic-lpae - 4.15.0.64.66
linux-image-generic-lpae-hwe-18.04 - 5.0.0.29.86
linux-image-gke - 4.15.0.1044.47
linux-image-gke-4.15 - 4.15.0.1044.47
linux-image-gke-5.0 - 5.0.0.1017.7
linux-image-kvm - 4.15.0.1046.46
linux-image-lowlatency - 4.15.0.64.66
linux-image-lowlatency-hwe-18.04 - 5.0.0.29.86
linux-image-oem - 4.15.0.1056.60
linux-image-oracle - 4.15.0.1025.28
linux-image-powerpc-e500mc - 4.15.0.64.66
linux-image-powerpc-smp - 4.15.0.64.66
linux-image-powerpc64-emb - 4.15.0.64.66
linux-image-powerpc64-smp - 4.15.0.64.66
linux-image-raspi2 - 4.15.0.1047.45
linux-image-snapdragon - 4.15.0.1064.67
linux-image-snapdragon-hwe-18.04 - 5.0.0.29.86
linux-image-virtual - 4.15.0.64.66
linux-image-virtual-hwe-18.04 - 5.0.0.29.86
Ubuntu 16.04 LTS
linux-image-4.15.0-1025-oracle - 4.15.0-1025.28~16.04.1
linux-image-4.15.0-1044-gcp - 4.15.0-1044.46
linux-image-4.15.0-1050-aws - 4.15.0-1050.52~16.04.1
linux-image-4.15.0-1059-azure - 4.15.0-1059.64
linux-image-4.15.0-64-generic - 4.15.0-64.73~16.04.1
linux-image-4.15.0-64-generic-lpae - 4.15.0-64.73~16.04.1
linux-image-4.15.0-64-lowlatency - 4.15.0-64.73~16.04.1
linux-image-4.4.0-1058-kvm - 4.4.0-1058.65
linux-image-4.4.0-1094-aws - 4.4.0-1094.105
linux-image-4.4.0-1122-raspi2 - 4.4.0-1122.131
linux-image-4.4.0-1126-snapdragon - 4.4.0-1126.132
linux-image-4.4.0-164-generic - 4.4.0-164.192
linux-image-4.4.0-164-generic-lpae - 4.4.0-164.192
linux-image-4.4.0-164-lowlatency - 4.4.0-164.192
linux-image-4.4.0-164-powerpc-e500mc - 4.4.0-164.192
linux-image-4.4.0-164-powerpc-smp - 4.4.0-164.192
linux-image-4.4.0-164-powerpc64-emb - 4.4.0-164.192
linux-image-4.4.0-164-powerpc64-smp - 4.4.0-164.192
linux-image-aws - 4.4.0.1094.98
linux-image-aws-hwe - 4.15.0.1050.50
linux-image-azure - 4.15.0.1059.62
linux-image-gcp - 4.15.0.1044.58
linux-image-generic - 4.4.0.164.172
linux-image-generic-hwe-16.04 - 4.15.0.64.84
linux-image-generic-lpae - 4.4.0.164.172
linux-image-generic-lpae-hwe-16.04 - 4.15.0.64.84
linux-image-gke - 4.15.0.1044.58
linux-image-kvm - 4.4.0.1058.58
linux-image-lowlatency - 4.4.0.164.172
linux-image-lowlatency-hwe-16.04 - 4.15.0.64.84
linux-image-oem - 4.15.0.64.84
linux-image-oracle - 4.15.0.1025.18
linux-image-powerpc-e500mc - 4.4.0.164.172
linux-image-powerpc-smp - 4.4.0.164.172
linux-image-powerpc64-emb - 4.4.0.164.172
linux-image-powerpc64-smp - 4.4.0.164.172
linux-image-raspi2 - 4.4.0.1122.122
linux-image-snapdragon - 4.4.0.1126.118
linux-image-virtual - 4.4.0.164.172
linux-image-virtual-hwe-16.04 - 4.15.0.64.84
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
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.
References
o CVE-2019-14835
o CVE-2019-15030
o CVE-2019-15031
- ---
USN-4135-2: Linux kernel vulnerabilities
18 September 2019
linux, linux-aws, linux-azure, linux-lts-trusty, linux-lts-xenial vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
o Ubuntu 12.04 ESM
Summary
Several security issues were fixed in the Linux kernel.
Software Description
o linux - Linux kernel
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-azure - Linux kernel for Microsoft Azure Cloud systems
o linux-lts-xenial - Linux hardware enablement kernel from Xenial for Trusty
o linux-lts-trusty - Linux hardware enablement kernel from Trusty for Precise
ESM
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 14.04 ESM
linux-image-3.13.0-173-generic - 3.13.0-173.224
linux-image-3.13.0-173-generic-lpae - 3.13.0-173.224
linux-image-3.13.0-173-lowlatency - 3.13.0-173.224
linux-image-3.13.0-173-powerpc-e500 - 3.13.0-173.224
linux-image-3.13.0-173-powerpc-e500mc - 3.13.0-173.224
linux-image-3.13.0-173-powerpc-smp - 3.13.0-173.224
linux-image-3.13.0-173-powerpc64-emb - 3.13.0-173.224
linux-image-3.13.0-173-powerpc64-smp - 3.13.0-173.224
linux-image-4.15.0-1059-azure - 4.15.0-1059.64~14.04.1
linux-image-4.4.0-1054-aws - 4.4.0-1054.58
linux-image-4.4.0-164-generic - 4.4.0-164.192~14.04.1
linux-image-4.4.0-164-generic-lpae - 4.4.0-164.192~14.04.1
linux-image-4.4.0-164-lowlatency - 4.4.0-164.192~14.04.1
linux-image-4.4.0-164-powerpc-e500mc - 4.4.0-164.192~14.04.1
linux-image-4.4.0-164-powerpc-smp - 4.4.0-164.192~14.04.1
linux-image-4.4.0-164-powerpc64-emb - 4.4.0-164.192~14.04.1
linux-image-4.4.0-164-powerpc64-smp - 4.4.0-164.192~14.04.1
linux-image-aws - 4.4.0.1054.55
linux-image-azure - 4.15.0.1059.45
linux-image-generic - 3.13.0.173.184
linux-image-generic-lpae - 3.13.0.173.184
linux-image-generic-lpae-lts-xenial - 4.4.0.164.143
linux-image-generic-lts-xenial - 4.4.0.164.143
linux-image-lowlatency - 3.13.0.173.184
linux-image-lowlatency-lts-xenial - 4.4.0.164.143
linux-image-powerpc-e500 - 3.13.0.173.184
linux-image-powerpc-e500mc - 3.13.0.173.184
linux-image-powerpc-e500mc-lts-xenial - 4.4.0.164.143
linux-image-powerpc-smp - 3.13.0.173.184
linux-image-powerpc-smp-lts-xenial - 4.4.0.164.143
linux-image-powerpc64-emb - 3.13.0.173.184
linux-image-powerpc64-emb-lts-xenial - 4.4.0.164.143
linux-image-powerpc64-smp - 3.13.0.173.184
linux-image-powerpc64-smp-lts-xenial - 4.4.0.164.143
linux-image-server - 3.13.0.173.184
linux-image-virtual - 3.13.0.173.184
linux-image-virtual-lts-xenial - 4.4.0.164.143
Ubuntu 12.04 ESM
linux-image-3.13.0-173-generic - 3.13.0-173.224~12.04.1
linux-image-3.13.0-173-generic-lpae - 3.13.0-173.224~12.04.1
linux-image-3.13.0-173-lowlatency - 3.13.0-173.224~12.04.1
linux-image-3.2.0-143-generic - 3.2.0-143.190
linux-image-3.2.0-143-generic-pae - 3.2.0-143.190
linux-image-3.2.0-143-highbank - 3.2.0-143.190
linux-image-3.2.0-143-omap - 3.2.0-143.190
linux-image-3.2.0-143-powerpc-smp - 3.2.0-143.190
linux-image-3.2.0-143-powerpc64-smp - 3.2.0-143.190
linux-image-3.2.0-143-virtual - 3.2.0-143.190
linux-image-generic - 3.2.0.143.158
linux-image-generic-lpae-lts-trusty - 3.13.0.173.161
linux-image-generic-lts-trusty - 3.13.0.173.161
linux-image-generic-pae - 3.2.0.143.158
linux-image-highbank - 3.2.0.143.158
linux-image-omap - 3.2.0.143.158
linux-image-powerpc - 3.2.0.143.158
linux-image-powerpc-smp - 3.2.0.143.158
linux-image-powerpc64-smp - 3.2.0.143.158
linux-image-server - 3.2.0.143.158
linux-image-virtual - 3.2.0.143.158
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
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.
References
o USN-4135-1
o CVE-2019-14835
o CVE-2019-15030
o CVE-2019-15031
- --------------------------END INCLUDED TEXT--------------------
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