Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-4369-1: Linux kernel vulnerabilities

24 May 2020

Several security issues were fixed in the Linux kernel.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-5.3 - Linux kernel for Amazon Web Services (AWS) systems
  • linux-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-azure-5.3 - Linux kernel for Microsoft Azure Cloud systems
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) 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-kvm - Linux kernel for cloud environments
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-oracle-5.3 - Linux kernel for Oracle Cloud systems
  • linux-raspi2 - Linux kernel for Raspberry Pi (V7) 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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 19.10
Ubuntu 18.04

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.

Related notices

  • USN-4367-1: linux-image-raspi2, linux-oracle, linux-image-5.4.0-31-lowlatency, linux-image-5.4.0-1011-gcp, linux-kvm, linux-gcp, linux-image-generic-lpae-hwe-20.04, linux-image-5.4.0-26-generic, linux, linux-image-5.4.0-1011-aws, linux-image-5.4.0-1012-azure, linux-image-gcp, linux-image-lowlatency-hwe-18.04, linux-image-lowlatency-hwe-20.04, linux-image-lowlatency, linux-image-5.4.0-31-generic, linux-riscv, linux-image-oracle, linux-image-generic, linux-image-generic-lpae, linux-image-oem-osp1, linux-image-5.4.0-31-generic-lpae, linux-image-generic-hwe-18.04-edge, linux-image-virtual, linux-image-generic-hwe-18.04, linux-image-gke, linux-image-virtual-hwe-20.04, linux-image-generic-hwe-20.04, linux-image-5.4.0-1011-oracle, linux-image-lowlatency-hwe-18.04-edge, linux-image-5.4.0-1011-raspi, linux-image-5.4.0-1011-kvm, linux-image-raspi, linux-image-azure, linux-image-virtual-hwe-18.04-edge, linux-azure, linux-raspi, linux-image-aws, linux-aws, linux-image-oem, linux-image-generic-lpae-hwe-18.04-edge, linux-image-kvm, linux-image-generic-lpae-hwe-18.04, linux-image-virtual-hwe-18.04
  • USN-4414-1: linux-image-raspi2, linux-oracle, linux-hwe, linux-image-aws-hwe, linux-gke-4.15, linux-image-4.15.0-107-lowlatency, linux-image-azure-edge, linux-gcp, linux-image-4.15.0-1077-aws, linux-image-snapdragon, linux-kvm, linux-image-gcp-lts-18.04, linux-image-4.15.0-107-generic-lpae, linux-image-aws-lts-18.04, linux-image-virtual-hwe-16.04-edge, linux, linux-image-gcp, linux-image-lowlatency, linux-image-4.15.0-109-lowlatency, linux-snapdragon, linux-azure-4.15, linux-raspi2, linux-image-generic-hwe-16.04-edge, linux-image-oracle, linux-image-4.15.0-1046-oracle, linux-image-gke-4.15, linux-image-4.15.0-1069-kvm, linux-image-generic, linux-image-4.15.0-1065-raspi2, linux-image-generic-lpae, linux-image-generic-lpae-hwe-16.04, linux-aws-hwe, linux-image-virtual, linux-image-gke, linux-image-4.15.0-109-generic-lpae, linux-image-4.15.0-1091-azure, linux-image-oracle-lts-18.04, linux-image-lowlatency-hwe-16.04, linux-oem, linux-image-4.15.0-1074-aws, linux-gcp-4.15, linux-image-4.15.0-109-generic, linux-image-4.15.0-1091-oem, linux-image-virtual-hwe-16.04, linux-image-azure, linux-image-4.15.0-1064-gke, linux-image-lowlatency-hwe-16.04-edge, linux-image-4.15.0-107-generic, linux-image-4.15.0-1081-snapdragon, linux-azure, linux-image-generic-hwe-16.04, linux-image-generic-lpae-hwe-16.04-edge, linux-image-azure-lts-18.04, linux-aws, linux-image-4.15.0-1048-oracle, linux-image-oem, linux-image-kvm, linux-image-4.15.0-1078-gcp
  • USN-4368-1: linux-image-oem-osp1, linux-image-5.0.0-1037-gke, linux-oem-osp1, linux-gke-5.0, linux-image-5.0.0-1052-oem-osp1, linux-image-gke-5.0
  • USN-4364-1: linux-image-raspi2, linux-image-4.4.0-179-powerpc-e500mc, linux-image-4.4.0-179-generic, linux-image-generic-lts-wily, linux-image-4.4.0-179-generic-lpae, linux-image-snapdragon, linux-kvm, linux-image-lowlatency-lts-utopic, linux-image-powerpc64-emb-lts-xenial, linux-image-powerpc64-smp-lts-utopic, linux-image-powerpc64-smp-lts-wily, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-xenial, linux-image-powerpc-smp, linux-image-virtual-lts-wily, linux, linux-image-4.4.0-179-powerpc-smp, linux-image-4.4.0-1067-aws, linux-image-powerpc64-emb-lts-vivid, linux-image-lowlatency, linux-image-4.4.0-179-lowlatency, linux-image-generic-lpae-lts-utopic, linux-image-powerpc-e500mc, linux-image-generic-lts-utopic, linux-image-powerpc-smp-lts-vivid, linux-image-powerpc64-emb-lts-wily, linux-image-lowlatency-lts-wily, linux-image-powerpc-e500mc-lts-utopic, linux-image-4.4.0-179-powerpc64-emb, linux-raspi2, linux-snapdragon, linux-image-powerpc-e500mc-lts-vivid, linux-image-generic-lts-vivid, linux-lts-xenial, linux-image-generic, linux-image-4.4.0-1071-kvm, linux-image-generic-lpae, linux-image-generic-lts-xenial, linux-image-powerpc-smp-lts-utopic, linux-image-powerpc-e500mc-lts-wily, linux-image-virtual, linux-image-powerpc64-smp, linux-image-4.4.0-1107-aws, linux-image-virtual-lts-utopic, linux-image-lowlatency-lts-xenial, linux-image-powerpc-smp-lts-wily, linux-image-4.4.0-1137-snapdragon, linux-image-4.4.0-1133-raspi2, linux-image-generic-lpae-lts-wily, linux-image-4.4.0-179-powerpc64-smp, linux-image-powerpc64-emb, linux-image-virtual-lts-vivid, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc64-smp-lts-vivid, linux-image-lowlatency-lts-vivid, linux-image-powerpc64-smp-lts-xenial, linux-image-aws, linux-aws, linux-image-generic-lpae-lts-vivid, linux-image-virtual-lts-xenial, linux-image-powerpc64-emb-lts-utopic, linux-image-kvm
  • USN-4363-1: linux-image-raspi2, linux-oracle, linux-hwe, linux-image-aws-hwe, linux-gke-4.15, linux-image-azure-edge, linux-gcp, linux-image-snapdragon, linux-kvm, linux-image-4.15.0-101-generic-lpae, linux-image-4.15.0-1083-azure, linux-image-4.15.0-1039-oracle, linux-image-virtual-hwe-16.04-edge, linux-image-aws-lts-18.04, linux, linux-image-gcp, linux-image-4.15.0-1062-raspi2, linux-image-lowlatency, linux-snapdragon, linux-azure-4.15, linux-raspi2, linux-image-generic-hwe-16.04-edge, linux-image-oracle, linux-image-4.15.0-101-lowlatency, linux-image-gke-4.15, linux-image-4.15.0-1067-aws, linux-image-4.15.0-1079-snapdragon, linux-image-generic, linux-image-generic-lpae, linux-image-generic-lpae-hwe-16.04, linux-aws-hwe, linux-image-4.15.0-1060-kvm, linux-image-virtual, linux-image-gke, linux-image-oracle-lts-18.04, linux-image-4.15.0-1059-gke, linux-image-lowlatency-hwe-16.04, linux-oem, linux-image-virtual-hwe-16.04, linux-image-azure, linux-image-4.15.0-1071-gcp, linux-image-4.15.0-1081-oem, linux-image-lowlatency-hwe-16.04-edge, linux-azure, linux-image-4.15.0-101-generic, linux-image-generic-hwe-16.04, linux-image-generic-lpae-hwe-16.04-edge, linux-image-azure-lts-18.04, linux-aws, linux-image-oem, linux-image-kvm
  • LSN-0067-1: aws, generic-4.4, lowlatency-4.4, lowlatency-4.15, gcp, oem, azure, generic-4.15
  • LSN-0068-1: aws, generic-4.4, lowlatency-4.4, lowlatency-4.15, oem, generic-4.15
  • LSN-0072-1: lowlatency-5.4, aws, generic-4.4, generic-5.4, lowlatency-4.4, lowlatency-4.15, gcp, oem, azure, generic-4.15
  • USN-4345-1: linux-image-raspi2, linux-image-4.15.0-99-generic, linux-hwe, linux-oracle, linux-image-4.15.0-1061-raspi2, linux-gke-4.15, linux-image-aws-hwe, linux-image-azure-edge, linux-gcp, linux-image-snapdragon, linux-kvm, linux-image-4.15.0-1066-aws, linux-image-virtual-hwe-16.04-edge, linux-image-aws-lts-18.04, linux, linux-image-gcp, linux-image-lowlatency, linux-image-4.15.0-1059-kvm, linux-image-4.15.0-99-lowlatency, linux-snapdragon, linux-raspi2, linux-image-generic-hwe-16.04-edge, linux-image-oracle, linux-image-gke-4.15, linux-image-generic, linux-image-generic-lpae-hwe-16.04, linux-image-generic-lpae, linux-aws-hwe, linux-image-virtual, linux-image-gke, linux-image-oracle-lts-18.04, linux-oem, linux-image-lowlatency-hwe-16.04, linux-image-4.15.0-1061-gcp, linux-image-4.15.0-1038-oracle, linux-image-virtual-hwe-16.04, linux-image-azure, linux-image-4.15.0-1082-azure, linux-image-4.15.0-1077-snapdragon, linux-image-lowlatency-hwe-16.04-edge, linux-azure, linux-image-4.15.0-99-generic-lpae, linux-image-generic-hwe-16.04, linux-image-generic-lpae-hwe-16.04-edge, linux-image-4.15.0-1058-gke, linux-aws, linux-image-oem, linux-image-4.15.0-1080-oem, linux-image-kvm
  • USN-4391-1: linux-image-raspi2, linux-image-4.4.0-184-powerpc-e500mc, linux-image-4.4.0-1138-snapdragon, linux-image-generic-lts-wily, linux-image-snapdragon, linux-kvm, linux-image-4.4.0-184-generic, linux-image-lowlatency-lts-utopic, linux-image-powerpc64-emb-lts-xenial, linux-image-powerpc64-smp-lts-utopic, linux-image-powerpc64-smp-lts-wily, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-xenial, linux-image-powerpc-smp, linux-image-4.4.0-184-lowlatency, linux-image-virtual-lts-wily, linux, linux-image-4.4.0-184-powerpc64-smp, linux-image-powerpc64-emb-lts-vivid, linux-image-4.4.0-184-powerpc-smp, linux-image-lowlatency, linux-image-generic-lpae-lts-utopic, linux-image-powerpc-e500mc, linux-image-4.4.0-1134-raspi2, linux-image-4.4.0-1073-aws, linux-image-4.4.0-184-powerpc64-emb, linux-image-generic-lts-utopic, linux-image-lowlatency-lts-wily, linux-image-powerpc-e500mc-lts-utopic, linux-image-powerpc-smp-lts-vivid, linux-image-powerpc64-emb-lts-wily, linux-raspi2, linux-snapdragon, linux-image-powerpc-e500mc-lts-vivid, linux-image-4.4.0-184-generic-lpae, linux-image-generic-lts-vivid, linux-lts-xenial, linux-image-generic, linux-image-powerpc-smp-lts-utopic, linux-image-generic-lpae, linux-image-generic-lts-xenial, linux-image-powerpc-e500mc-lts-wily, linux-image-virtual, linux-image-powerpc64-smp, linux-image-virtual-lts-utopic, linux-image-lowlatency-lts-xenial, linux-image-powerpc-smp-lts-wily, linux-image-generic-lpae-lts-wily, linux-image-4.4.0-1109-aws, linux-image-powerpc64-emb, linux-image-4.4.0-1075-kvm, linux-image-virtual-lts-vivid, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc64-smp-lts-vivid, linux-image-lowlatency-lts-vivid, linux-image-powerpc64-smp-lts-xenial, linux-image-aws, linux-aws, linux-image-generic-lpae-lts-vivid, linux-image-virtual-lts-xenial, linux-image-powerpc64-emb-lts-utopic, linux-image-kvm