=========================================================================Ubuntu Security Notice USN-4369-1
May 21, 2020

linux, linux-aws, linux-aws-5.3, linux-gcp, linux-gcp-5.3, linux-gke-5.3,
linux-hwe, linux-kvm, linux-oracle, linux-oracle-5.3, linux-raspi2
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-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-raspi2: Linux kernel for Raspberry Pi (V7) systems
- linux-aws-5.3: Linux kernel for Amazon Web Services (AWS) 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:

It was discovered that the btrfs implementation in the Linux kernel did not
properly detect that a block was marked dirty in some situations. An
attacker could use this to specially craft a file system image that, when
unmounted, could cause a denial of service (system crash). (CVE-2019-19377)

Tristan Madani discovered that the file locking implementation in the Linux
kernel contained a race condition. A local attacker could possibly use this
to cause a denial of service or expose sensitive information.
(CVE-2019-19769)

It was discovered that the Serial CAN interface driver in the Linux kernel
did not properly initialize data. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2020-11494)

It was discovered that the linux kernel did not properly validate certain
mount options to the tmpfs virtual memory file system. A local attacker
with the ability to specify mount options could use this to cause a denial
of service (system crash). (CVE-2020-11565)

It was discovered that the OV51x USB Camera device driver in the Linux
kernel did not properly validate device metadata. A physically proximate
attacker could use this to cause a denial of service (system crash).
(CVE-2020-11608)

It was discovered that the STV06XX USB Camera device driver in the Linux
kernel did not properly validate device metadata. A physically proximate
attacker could use this to cause a denial of service (system crash).
(CVE-2020-11609)

It was discovered that the Xirlink C-It USB Camera device driver in the
Linux kernel did not properly validate device metadata. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2020-11668)

It was discovered that the block layer in the Linux kernel contained a race
condition leading to a use-after-free vulnerability. A local attacker could
possibly use this to cause a denial of service (system crash) or execute
arbitrary code. (CVE-2020-12657)

Update instructions:

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

Ubuntu 19.10:
  linux-image-5.3.0-1017-kvm      5.3.0-1017.19
  linux-image-5.3.0-1018-oracle   5.3.0-1018.20
  linux-image-5.3.0-1019-aws      5.3.0-1019.21
  linux-image-5.3.0-1020-gcp      5.3.0-1020.22
  linux-image-5.3.0-1025-raspi2   5.3.0-1025.27
  linux-image-5.3.0-53-generic    5.3.0-53.47
  linux-image-5.3.0-53-generic-lpae  5.3.0-53.47
  linux-image-5.3.0-53-lowlatency  5.3.0-53.47
  linux-image-5.3.0-53-snapdragon  5.3.0-53.47
  linux-image-aws                 5.3.0.1019.31
  linux-image-gcp                 5.3.0.1020.31
  linux-image-generic             5.3.0.53.45
  linux-image-generic-lpae        5.3.0.53.45
  linux-image-gke                 5.3.0.1020.31
  linux-image-kvm                 5.3.0.1017.19
  linux-image-lowlatency          5.3.0.53.45
  linux-image-oracle              5.3.0.1018.33
  linux-image-raspi2              5.3.0.1025.22
  linux-image-snapdragon          5.3.0.53.45
  linux-image-virtual             5.3.0.53.45

Ubuntu 18.04 LTS:
  linux-image-5.3.0-1018-oracle   5.3.0-1018.20~18.04.1
  linux-image-5.3.0-1019-aws      5.3.0-1019.21~18.04.1
  linux-image-5.3.0-1020-gcp      5.3.0-1020.22~18.04.1
  linux-image-5.3.0-1020-gke      5.3.0-1020.22~18.04.1
  linux-image-5.3.0-53-generic    5.3.0-53.47~18.04.1
  linux-image-5.3.0-53-generic-lpae  5.3.0-53.47~18.04.1
  linux-image-5.3.0-53-lowlatency  5.3.0-53.47~18.04.1
  linux-image-aws                 5.3.0.1019.20
  linux-image-aws-edge            5.3.0.1019.20
  linux-image-gcp                 5.3.0.1020.19
  linux-image-gcp-edge            5.3.0.1020.19
  linux-image-generic-hwe-18.04   5.3.0.53.109
  linux-image-generic-lpae-hwe-18.04  5.3.0.53.109
  linux-image-gke-5.3             5.3.0.1020.10
  linux-image-gkeop-5.3           5.3.0.53.109
  linux-image-lowlatency-hwe-18.04  5.3.0.53.109
  linux-image-oracle              5.3.0.1018.19
  linux-image-snapdragon-hwe-18.04  5.3.0.53.109
  linux-image-virtual-hwe-18.04   5.3.0.53.109

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://ubuntu.com/security/notices/USN-4369-1
  CVE-2019-19377, CVE-2019-19769, CVE-2020-11494, CVE-2020-11565,
  CVE-2020-11608, CVE-2020-11609, CVE-2020-11668, CVE-2020-12657

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.3.0-53.47
  https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1019.21
  https://launchpad.net/ubuntu/+source/linux-gcp/5.3.0-1020.22
  https://launchpad.net/ubuntu/+source/linux-kvm/5.3.0-1017.19
  https://launchpad.net/ubuntu/+source/linux-oracle/5.3.0-1018.20
  https://launchpad.net/ubuntu/+source/linux-raspi2/5.3.0-1025.27
  https://launchpad.net/ubuntu/+source/linux-aws-5.3/5.3.0-1019.21~18.04.1
  https://launchpad.net/ubuntu/+source/linux-gcp-5.3/5.3.0-1020.22~18.04.1
  https://launchpad.net/ubuntu/+source/linux-gke-5.3/5.3.0-1020.22~18.04.1
  https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-53.47~18.04.1
  https://launchpad.net/ubuntu/+source/linux-oracle-5.3/5.3.0-1018.20~18.04.1

Ubuntu 4369-1: Linux kernel vulnerabilities

May 20, 2020
Several security issues were fixed in the Linux kernel.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10: linux-image-5.3.0-1017-kvm 5.3.0-1017.19 linux-image-5.3.0-1018-oracle 5.3.0-1018.20 linux-image-5.3.0-1019-aws 5.3.0-1019.21 linux-image-5.3.0-1020-gcp 5.3.0-1020.22 linux-image-5.3.0-1025-raspi2 5.3.0-1025.27 linux-image-5.3.0-53-generic 5.3.0-53.47 linux-image-5.3.0-53-generic-lpae 5.3.0-53.47 linux-image-5.3.0-53-lowlatency 5.3.0-53.47 linux-image-5.3.0-53-snapdragon 5.3.0-53.47 linux-image-aws 5.3.0.1019.31 linux-image-gcp 5.3.0.1020.31 linux-image-generic 5.3.0.53.45 linux-image-generic-lpae 5.3.0.53.45 linux-image-gke 5.3.0.1020.31 linux-image-kvm 5.3.0.1017.19 linux-image-lowlatency 5.3.0.53.45 linux-image-oracle 5.3.0.1018.33 linux-image-raspi2 5.3.0.1025.22 linux-image-snapdragon 5.3.0.53.45 linux-image-virtual 5.3.0.53.45 Ubuntu 18.04 LTS: linux-image-5.3.0-1018-oracle 5.3.0-1018.20~18.04.1 linux-image-5.3.0-1019-aws 5.3.0-1019.21~18.04.1 linux-image-5.3.0-1020-gcp 5.3.0-1020.22~18.04.1 linux-image-5.3.0-1020-gke 5.3.0-1020.22~18.04.1 linux-image-5.3.0-53-generic 5.3.0-53.47~18.04.1 linux-image-5.3.0-53-generic-lpae 5.3.0-53.47~18.04.1 linux-image-5.3.0-53-lowlatency 5.3.0-53.47~18.04.1 linux-image-aws 5.3.0.1019.20 linux-image-aws-edge 5.3.0.1019.20 linux-image-gcp 5.3.0.1020.19 linux-image-gcp-edge 5.3.0.1020.19 linux-image-generic-hwe-18.04 5.3.0.53.109 linux-image-generic-lpae-hwe-18.04 5.3.0.53.109 linux-image-gke-5.3 5.3.0.1020.10 linux-image-gkeop-5.3 5.3.0.53.109 linux-image-lowlatency-hwe-18.04 5.3.0.53.109 linux-image-oracle 5.3.0.1018.19 linux-image-snapdragon-hwe-18.04 5.3.0.53.109 linux-image-virtual-hwe-18.04 5.3.0.53.109 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://ubuntu.com/security/notices/USN-4369-1

CVE-2019-19377, CVE-2019-19769, CVE-2020-11494, CVE-2020-11565,

CVE-2020-11608, CVE-2020-11609, CVE-2020-11668, CVE-2020-12657

Severity
May 21, 2020

Package Information

https://launchpad.net/ubuntu/+source/linux/5.3.0-53.47 https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1019.21 https://launchpad.net/ubuntu/+source/linux-gcp/5.3.0-1020.22 https://launchpad.net/ubuntu/+source/linux-kvm/5.3.0-1017.19 https://launchpad.net/ubuntu/+source/linux-oracle/5.3.0-1018.20 https://launchpad.net/ubuntu/+source/linux-raspi2/5.3.0-1025.27 https://launchpad.net/ubuntu/+source/linux-aws-5.3/5.3.0-1019.21~18.04.1 https://launchpad.net/ubuntu/+source/linux-gcp-5.3/5.3.0-1020.22~18.04.1 https://launchpad.net/ubuntu/+source/linux-gke-5.3/5.3.0-1020.22~18.04.1 https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-53.47~18.04.1 https://launchpad.net/ubuntu/+source/linux-oracle-5.3/5.3.0-1018.20~18.04.1

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