Sigurnosni nedostaci jezgre operacijskog sustava

==========================================================================
Ubuntu Security Notice USN-4388-1
June 09, 2020

linux-gke-5.0, linux-oem-osp1 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux-gke-5.0: Linux kernel for Google Container Engine (GKE) systems
– linux-oem-osp1: Linux kernel for OEM systems

Details:

It was discovered that the F2FS file system implementation in the Linux
kernel did not properly perform bounds checking on xattrs in some
situations. A local attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2020-0067)

It was discovered that memory contents previously stored in
microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY
read operations on Intel client and Xeon E3 processors may be briefly
exposed to processes on the same or different processor cores. A local
attacker could use this to expose sensitive information. (CVE-2020-0543)

Piotr Krysiuk discovered that race conditions existed in the file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2020-12114)

It was discovered that the USB susbsystem’s scatter-gather implementation
in the Linux kernel did not properly take data references in some
situations, leading to a use-after-free. A physically proximate attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2020-12464)

Bui Quang Minh discovered that the XDP socket implementation in the Linux
kernel did not properly validate meta-data passed from user space, leading
to an out-of-bounds write vulnerability. A local attacker with the
CAP_NET_ADMIN capability could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2020-12659)

Xiumei Mu discovered that the IPSec implementation in the Linux kernel did
not properly encrypt IPv6 traffic in some situations. An attacker could use
this to expose sensitive information. (CVE-2020-1749)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
linux-image-5.0.0-1042-gke 5.0.0-1042.43
linux-image-5.0.0-1059-oem-osp1 5.0.0-1059.64
linux-image-gke-5.0 5.0.0.1042.27
linux-image-oem-osp1 5.0.0.1059.58

Please note that the mitigation for CVE-2020-0543 requires a processor
microcode update to be applied, either from your system manufacturer
or via the intel-microcode package. The kernel update for this issue
provides the ability to disable the mitigation and to report
vulnerability status.

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:
https://usn.ubuntu.com/4388-1
CVE-2020-0067, CVE-2020-0543, CVE-2020-12114, CVE-2020-12464,
CVE-2020-12659, CVE-2020-1749,
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SRBDS

Package Information:
https://launchpad.net/ubuntu/+source/linux-gke-5.0/5.0.0-1042.43
https://launchpad.net/ubuntu/+source/linux-oem-osp1/5.0.0-1059.64

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==========================================================================
Ubuntu Security Notice USN-4389-1
June 09, 2020

linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oracle
vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Details:

Dmitry Vyukov discovered that the SELinux netlink security hook in the
Linux kernel did not validate messages in some situations. A privileged
attacker could use this to bypass SELinux netlink restrictions.
(CVE-2020-10751)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
linux-image-5.4.0-1015-aws 5.4.0-1015.15
linux-image-5.4.0-1015-gcp 5.4.0-1015.15
linux-image-5.4.0-1015-kvm 5.4.0-1015.15
linux-image-5.4.0-1015-oracle 5.4.0-1015.15
linux-image-5.4.0-1016-azure 5.4.0-1016.16
linux-image-5.4.0-37-generic 5.4.0-37.41
linux-image-5.4.0-37-generic-lpae 5.4.0-37.41
linux-image-5.4.0-37-lowlatency 5.4.0-37.41
linux-image-aws 5.4.0.1015.16
linux-image-azure 5.4.0.1016.16
linux-image-gcp 5.4.0.1015.14
linux-image-generic 5.4.0.37.40
linux-image-generic-hwe-20.04 5.4.0.37.40
linux-image-generic-lpae 5.4.0.37.40
linux-image-generic-lpae-hwe-20.04 5.4.0.37.40
linux-image-gke 5.4.0.1015.14
linux-image-kvm 5.4.0.1015.14
linux-image-lowlatency 5.4.0.37.40
linux-image-lowlatency-hwe-20.04 5.4.0.37.40
linux-image-oem 5.4.0.37.40
linux-image-oem-osp1 5.4.0.37.40
linux-image-oracle 5.4.0.1015.14
linux-image-virtual 5.4.0.37.40
linux-image-virtual-hwe-20.04 5.4.0.37.40

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4389-1
CVE-2020-0067, CVE-2020-0543, CVE-2020-10751, CVE-2020-12114,
CVE-2020-12464, CVE-2020-12659,
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SRBDS

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.4.0-37.41
https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1015.15
https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1016.16
https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1015.15
https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1015.15
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1015.15

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==========================================================================
Ubuntu Security Notice USN-4390-1
June 10, 2020

linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp,
linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle
vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux: Linux kernel
– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
– linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems
– linux-gke-4.15: Linux kernel for Google Container Engine (GKE) systems
– linux-kvm: Linux kernel for cloud environments
– linux-oem: Linux kernel for OEM systems
– linux-oracle: Linux kernel for Oracle Cloud 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-hwe: Linux hardware enablement (HWE) kernel

Details:

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
linux-image-4.15.0-1045-oracle 4.15.0-1045.49
linux-image-4.15.0-106-generic 4.15.0-106.107
linux-image-4.15.0-106-generic-lpae 4.15.0-106.107
linux-image-4.15.0-106-lowlatency 4.15.0-106.107
linux-image-4.15.0-1063-gke 4.15.0-1063.66
linux-image-4.15.0-1067-kvm 4.15.0-1067.68
linux-image-4.15.0-1073-aws 4.15.0-1073.77
linux-image-4.15.0-1087-oem 4.15.0-1087.97
linux-image-4.15.0-1089-azure 4.15.0-1089.99
linux-image-aws-lts-18.04 4.15.0.1073.76
linux-image-azure-lts-18.04 4.15.0.1089.60
linux-image-generic 4.15.0.106.94
linux-image-generic-lpae 4.15.0.106.94
linux-image-gke 4.15.0.1063.65
linux-image-gke-4.15 4.15.0.1063.65
linux-image-kvm 4.15.0.1067.63
linux-image-lowlatency 4.15.0.106.94
linux-image-oem 4.15.0.1087.91
linux-image-oracle-lts-18.04 4.15.0.1045.54
linux-image-powerpc-e500mc 4.15.0.106.94
linux-image-powerpc-smp 4.15.0.106.94
linux-image-powerpc64-emb 4.15.0.106.94
linux-image-powerpc64-smp 4.15.0.106.94
linux-image-virtual 4.15.0.106.94

Ubuntu 16.04 LTS:
linux-image-4.15.0-1045-oracle 4.15.0-1045.49~16.04.1
linux-image-4.15.0-106-generic 4.15.0-106.107~16.04.1
linux-image-4.15.0-106-generic-lpae 4.15.0-106.107~16.04.1
linux-image-4.15.0-106-lowlatency 4.15.0-106.107~16.04.1
linux-image-4.15.0-1073-aws 4.15.0-1073.77~16.04.1
linux-image-4.15.0-1077-gcp 4.15.0-1077.87~16.04.1
linux-image-4.15.0-1089-azure 4.15.0-1089.99~16.04.1
linux-image-aws-hwe 4.15.0.1073.73
linux-image-azure 4.15.0.1089.84
linux-image-azure-edge 4.15.0.1089.84
linux-image-gcp 4.15.0.1077.79
linux-image-generic-hwe-16.04 4.15.0.106.111
linux-image-generic-lpae-hwe-16.04 4.15.0.106.111
linux-image-gke 4.15.0.1077.79
linux-image-lowlatency-hwe-16.04 4.15.0.106.111
linux-image-oem 4.15.0.106.111
linux-image-oracle 4.15.0.1045.38
linux-image-virtual-hwe-16.04 4.15.0.106.111

Ubuntu 14.04 ESM:
linux-image-4.15.0-1089-azure 4.15.0-1089.99~14.04.1
linux-image-azure 4.15.0.1089.66

Please note that the mitigation for CVE-2020-0543 requires a processor
microcode update to be applied, either from your system manufacturer
or via the intel-microcode package. The kernel update for this
issue provides the ability to disable the mitigation and to report
vulnerability status.

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4390-1
CVE-2020-0067, CVE-2020-0543, CVE-2020-10751, CVE-2020-12114,
CVE-2020-12464, CVE-2020-1749,
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SRBDS

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.15.0-106.107
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1073.77
https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1089.99
https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1063.66
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1067.68
https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1087.97
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1045.49
https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1073.77~16.04.1
https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1089.99~16.04.1
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1077.87~16.04.1
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-106.107~16.04.1
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1045.49~16.04.1

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==========================================================================
Ubuntu Security Notice USN-4393-1
June 10, 2020

linux vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux: Linux kernel

Details:

It was discovered that the Marvell WiFi-Ex Driver in the Linux kernel did
not properly validate status lengths in messages received from an access
point, leading to a buffer overflow. A physically proximate attacker
controlling an access point could use this to construct messages that could
possibly result in arbitrary code execution. (CVE-2020-12654)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 ESM:
linux-image-3.2.0-147-generic 3.2.0-147.194
linux-image-3.2.0-147-generic-pae 3.2.0-147.194
linux-image-3.2.0-147-highbank 3.2.0-147.194
linux-image-3.2.0-147-powerpc-smp 3.2.0-147.194
linux-image-3.2.0-147-powerpc64-smp 3.2.0-147.194
linux-image-3.2.0-147-virtual 3.2.0-147.194
linux-image-generic 3.2.0.147.161
linux-image-generic-pae 3.2.0.147.161
linux-image-highbank 3.2.0.147.161
linux-image-powerpc 3.2.0.147.161
linux-image-powerpc-smp 3.2.0.147.161
linux-image-powerpc64-smp 3.2.0.147.161
linux-image-server 3.2.0.147.161
linux-image-virtual 3.2.0.147.161

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4393-1
CVE-2020-0543, CVE-2020-12654,
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SRBDS

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==========================================================================
Ubuntu Security Notice USN-4387-1
June 09, 2020

linux, linux-aws, linux-aws-5.3, linux-azure, linux-azure-5.3, linux-gcp,
linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-kvm, linux-oracle,
linux-oracle-5.3 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 19.10
– Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux: Linux kernel
– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
– linux-azure: Linux kernel for Microsoft Azure Cloud systems
– linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
– linux-kvm: Linux kernel for cloud environments
– linux-oracle: Linux kernel for Oracle Cloud systems
– linux-aws-5.3: Linux kernel for Amazon Web Services (AWS) systems
– linux-azure-5.3: Linux kernel for Microsoft Azure Cloud systems
– linux-gcp-5.3: Linux kernel for Google Cloud Platform (GCP) systems
– linux-gke-5.3: Linux kernel for Google Container Engine (GKE) systems
– linux-hwe: Linux hardware enablement (HWE) kernel
– linux-oracle-5.3: Linux kernel for Oracle Cloud systems

Details:

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.10:
linux-image-5.3.0-1023-aws 5.3.0-1023.25
linux-image-5.3.0-1023-kvm 5.3.0-1023.25
linux-image-5.3.0-1024-oracle 5.3.0-1024.26
linux-image-5.3.0-1026-gcp 5.3.0-1026.28
linux-image-5.3.0-1028-azure 5.3.0-1028.29
linux-image-5.3.0-59-generic 5.3.0-59.53
linux-image-5.3.0-59-generic-lpae 5.3.0-59.53
linux-image-5.3.0-59-lowlatency 5.3.0-59.53
linux-image-5.3.0-59-snapdragon 5.3.0-59.53
linux-image-aws 5.3.0.1023.34
linux-image-azure 5.3.0.1028.47
linux-image-gcp 5.3.0.1026.37
linux-image-generic 5.3.0.59.49
linux-image-generic-lpae 5.3.0.59.49
linux-image-gke 5.3.0.1026.37
linux-image-kvm 5.3.0.1023.21
linux-image-lowlatency 5.3.0.59.49
linux-image-oracle 5.3.0.1024.40
linux-image-snapdragon 5.3.0.59.49
linux-image-virtual 5.3.0.59.49

Ubuntu 18.04 LTS:
linux-image-5.3.0-1023-aws 5.3.0-1023.25~18.04.1
linux-image-5.3.0-1024-oracle 5.3.0-1024.26~18.04.1
linux-image-5.3.0-1026-gcp 5.3.0-1026.28~18.04.1
linux-image-5.3.0-1026-gke 5.3.0-1026.28~18.04.1
linux-image-5.3.0-1028-azure 5.3.0-1028.29~18.04.1
linux-image-5.3.0-59-generic 5.3.0-59.53~18.04.1
linux-image-5.3.0-59-generic-lpae 5.3.0-59.53~18.04.1
linux-image-5.3.0-59-lowlatency 5.3.0-59.53~18.04.1
linux-image-aws 5.3.0.1023.23
linux-image-azure 5.3.0.1028.25
linux-image-gcp 5.3.0.1026.21
linux-image-generic-hwe-18.04 5.3.0.59.113
linux-image-generic-lpae-hwe-18.04 5.3.0.59.113
linux-image-gke-5.3 5.3.0.1026.13
linux-image-gkeop-5.3 5.3.0.59.113
linux-image-lowlatency-hwe-18.04 5.3.0.59.113
linux-image-oracle 5.3.0.1024.22
linux-image-snapdragon-hwe-18.04 5.3.0.59.113
linux-image-virtual-hwe-18.04 5.3.0.59.113

Please note that the mitigation for CVE-2020-0543 requires a processor
microcode update to be applied, either from your system manufacturer
or via the intel-microcode package. The kernel update for this
issue provides the ability to disable the mitigation and to report
vulnerability status.

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4387-1
CVE-2020-0067, CVE-2020-0543, CVE-2020-12114, CVE-2020-12464,
CVE-2020-12659, https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SRBDS

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.3.0-59.53
https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1023.25
https://launchpad.net/ubuntu/+source/linux-azure/5.3.0-1028.29
https://launchpad.net/ubuntu/+source/linux-gcp/5.3.0-1026.28
https://launchpad.net/ubuntu/+source/linux-kvm/5.3.0-1023.25
https://launchpad.net/ubuntu/+source/linux-oracle/5.3.0-1024.26
https://launchpad.net/ubuntu/+source/linux-aws-5.3/5.3.0-1023.25~18.04.1
https://launchpad.net/ubuntu/+source/linux-azure-5.3/5.3.0-1028.29~18.04.1
https://launchpad.net/ubuntu/+source/linux-gcp-5.3/5.3.0-1026.28~18.04.1
https://launchpad.net/ubuntu/+source/linux-gke-5.3/5.3.0-1026.28~18.04.1
https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-59.53~18.04.1
https://launchpad.net/ubuntu/+source/linux-oracle-5.3/5.3.0-1024.26~18.04.1

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==========================================================================
Ubuntu Security Notice USN-4391-1
June 10, 2020

linux, linux-aws, linux-kvm vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 16.04 LTS
– Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux: Linux kernel
– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
– linux-kvm: Linux kernel for cloud environments
– linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

It was discovered that the ext4 file system implementation in the Linux
kernel did not properly handle setxattr operations in some situations. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2019-19319)

It was discovered that the DesignWare SPI controller driver in the Linux
kernel contained a race condition. A local attacker could possibly use this
to cause a denial of service (system crash). (CVE-2020-12769)

It was discovered that the exit signaling implementation in the Linux
kernel contained an integer overflow. A local attacker could use this to
cause a denial of service (arbitrary application crash). (CVE-2020-12826)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
linux-image-4.4.0-1075-kvm 4.4.0-1075.82
linux-image-4.4.0-1109-aws 4.4.0-1109.120
linux-image-4.4.0-184-generic 4.4.0-184.214
linux-image-4.4.0-184-generic-lpae 4.4.0-184.214
linux-image-4.4.0-184-lowlatency 4.4.0-184.214
linux-image-4.4.0-184-powerpc-e500mc 4.4.0-184.214
linux-image-4.4.0-184-powerpc-smp 4.4.0-184.214
linux-image-4.4.0-184-powerpc64-emb 4.4.0-184.214
linux-image-4.4.0-184-powerpc64-smp 4.4.0-184.214
linux-image-aws 4.4.0.1109.113
linux-image-generic 4.4.0.184.190
linux-image-generic-lpae 4.4.0.184.190
linux-image-kvm 4.4.0.1075.73
linux-image-lowlatency 4.4.0.184.190
linux-image-powerpc-e500mc 4.4.0.184.190
linux-image-powerpc-smp 4.4.0.184.190
linux-image-powerpc64-emb 4.4.0.184.190
linux-image-powerpc64-smp 4.4.0.184.190
linux-image-virtual 4.4.0.184.190

Ubuntu 14.04 ESM:
linux-image-4.4.0-1073-aws 4.4.0-1073.77
linux-image-4.4.0-184-generic 4.4.0-184.214~14.04.1
linux-image-4.4.0-184-generic-lpae 4.4.0-184.214~14.04.1
linux-image-4.4.0-184-lowlatency 4.4.0-184.214~14.04.1
linux-image-4.4.0-184-powerpc-e500mc 4.4.0-184.214~14.04.1
linux-image-4.4.0-184-powerpc-smp 4.4.0-184.214~14.04.1
linux-image-4.4.0-184-powerpc64-emb 4.4.0-184.214~14.04.1
linux-image-4.4.0-184-powerpc64-smp 4.4.0-184.214~14.04.1
linux-image-aws 4.4.0.1073.70
linux-image-generic-lpae-lts-xenial 4.4.0.184.161
linux-image-generic-lts-xenial 4.4.0.184.161
linux-image-lowlatency-lts-xenial 4.4.0.184.161
linux-image-powerpc-e500mc-lts-xenial 4.4.0.184.161
linux-image-powerpc-smp-lts-xenial 4.4.0.184.161
linux-image-powerpc64-emb-lts-xenial 4.4.0.184.161
linux-image-powerpc64-smp-lts-xenial 4.4.0.184.161
linux-image-virtual-lts-xenial 4.4.0.184.161

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4391-1
CVE-2019-19319, CVE-2020-0543, CVE-2020-10751, CVE-2020-12114,
CVE-2020-12464, CVE-2020-12769, CVE-2020-12826, CVE-2020-1749,
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SRBDS

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-184.214
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1109.120
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1075.82

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==========================================================================
Ubuntu Security Notice USN-4392-1
June 10, 2020

linux, linux-lts-trusty vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 14.04 ESM
– Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux: Linux kernel
– linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM

Details:

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 ESM:
linux-image-3.13.0-180-generic 3.13.0-180.231
linux-image-3.13.0-180-generic-lpae 3.13.0-180.231
linux-image-3.13.0-180-lowlatency 3.13.0-180.231
linux-image-3.13.0-180-powerpc-e500 3.13.0-180.231
linux-image-3.13.0-180-powerpc-e500mc 3.13.0-180.231
linux-image-3.13.0-180-powerpc-smp 3.13.0-180.231
linux-image-3.13.0-180-powerpc64-emb 3.13.0-180.231
linux-image-3.13.0-180-powerpc64-smp 3.13.0-180.231
linux-image-generic 3.13.0.180.189
linux-image-generic-lpae 3.13.0.180.189
linux-image-highbank 3.13.0.180.189
linux-image-lowlatency 3.13.0.180.189
linux-image-omap 3.13.0.180.189
linux-image-powerpc-e500 3.13.0.180.189
linux-image-powerpc-e500mc 3.13.0.180.189
linux-image-powerpc-smp 3.13.0.180.189
linux-image-powerpc64-emb 3.13.0.180.189
linux-image-powerpc64-smp 3.13.0.180.189
linux-image-server 3.13.0.180.189
linux-image-virtual 3.13.0.180.189

Ubuntu 12.04 ESM:
linux-image-3.13.0-180-generic 3.13.0-180.231~12.04.1
linux-image-3.13.0-180-generic-lpae 3.13.0-180.231~12.04.1
linux-image-3.13.0-180-lowlatency 3.13.0-180.231~12.04.1
linux-image-generic-lpae-lts-trusty 3.13.0.180.166
linux-image-generic-lts-trusty 3.13.0.180.166

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4392-1
CVE-2020-0543, CVE-2020-12114, CVE-2020-12654,
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SRBDS

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