Ubuntu 20.04 LTS: 5267-1 Moderate: Linux Kernel Denial of Service

ubuntu

February 3, 2022

Several security issues were fixed in the Linux kernel.

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-bluefield: Linux kernel for NVIDIA BlueField platforms

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems

- linux-ibm: Linux kernel for IBM cloud systems

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems

- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gkeop-5.4: Linux kernel for Google Container Engine (GKE) systems

- linux-hwe-5.4: Linux hardware enablement (HWE) kernel

- linux-oracle-5.4: Linux kernel for Oracle Cloud systems

Details:

It was discovered that the Bluetooth subsystem in the Linux kernel

contained a use-after-free vulnerability. A local attacker could use this

to ...

Read the Full Advisory

Topics Covered

security advisory denial of service kernel update Ubuntu system crash

Update Instructions

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

Ubuntu 20.04 LTS:
  linux-image-5.4.0-1013-ibm      5.4.0-1013.14
  linux-image-5.4.0-1026-bluefield  5.4.0-1026.29
  linux-image-5.4.0-1032-gkeop    5.4.0-1032.33
  linux-image-5.4.0-1054-kvm      5.4.0-1054.56
  linux-image-5.4.0-1062-oracle   5.4.0-1062.66
  linux-image-5.4.0-1063-gcp      5.4.0-1063.67
  linux-image-5.4.0-1064-aws      5.4.0-1064.67
  linux-image-5.4.0-97-generic    5.4.0-97.110
  linux-image-5.4.0-97-generic-lpae  5.4.0-97.110
  linux-image-5.4.0-97-lowlatency  5.4.0-97.110
  linux-image-aws-lts-20.04       5.4.0.1064.66
  linux-image-bluefield           5.4.0.1026.27
  linux-image-gcp-lts-20.04       5.4.0.1063.73
  linux-image-generic             5.4.0.97.101
  linux-image-generic-hwe-18.04   5.4.0.97.101
  linux-image-generic-hwe-18.04-edge  5.4.0.97.101
  linux-image-generic-lpae        5.4.0.97.101
  linux-image-generic-lpae-hwe-18.04  5.4.0.97.101
  linux-image-generic-lpae-hwe-18.04-edge  5.4.0.97.101
  linux-image-gkeop               5.4.0.1032.35
  linux-image-gkeop-5.4           5.4.0.1032.35
  linux-image-ibm                 5.4.0.1013.14
  linux-image-ibm-lts-20.04       5.4.0.1013.14
  linux-image-kvm                 5.4.0.1054.53
  linux-image-lowlatency          5.4.0.97.101
  linux-image-lowlatency-hwe-18.04  5.4.0.97.101
  linux-image-lowlatency-hwe-18.04-edge  5.4.0.97.101
  linux-image-oem                 5.4.0.97.101
  linux-image-oem-osp1            5.4.0.97.101
  linux-image-oracle-lts-20.04    5.4.0.1062.62
  linux-image-virtual             5.4.0.97.101
  linux-image-virtual-hwe-18.04   5.4.0.97.101
  linux-image-virtual-hwe-18.04-edge  5.4.0.97.101

Ubuntu 18.04 LTS:
  linux-image-5.4.0-1032-gkeop    5.4.0-1032.33~18.04.1
  linux-image-5.4.0-1062-oracle   5.4.0-1062.66~18.04.1
  linux-image-5.4.0-1063-gcp      5.4.0-1063.67~18.04.1
  linux-image-5.4.0-97-generic    5.4.0-97.110~18.04.1
  linux-image-5.4.0-97-generic-lpae  5.4.0-97.110~18.04.1
  linux-image-5.4.0-97-lowlatency  5.4.0-97.110~18.04.1
  linux-image-aws                 5.4.0.1064.46
  linux-image-gcp                 5.4.0.1063.48
  linux-image-generic-hwe-18.04   5.4.0.97.110~18.04.85
  linux-image-generic-lpae-hwe-18.04  5.4.0.97.110~18.04.85
  linux-image-gkeop-5.4           5.4.0.1032.33~18.04.32
  linux-image-lowlatency-hwe-18.04  5.4.0.97.110~18.04.85
  linux-image-oem                 5.4.0.97.110~18.04.85
  linux-image-oem-osp1            5.4.0.97.110~18.04.85
  linux-image-oracle              5.4.0.1062.66~18.04.41
  linux-image-snapdragon-hwe-18.04  5.4.0.97.110~18.04.85
  linux-image-virtual-hwe-18.04   5.4.0.97.110~18.04.85

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.