==========================================================================
Ubuntu Security Notice USN-5358-1
March 31, 2022

linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.13, linux-hwe-5.4,
linux-kvm, linux-oracle, linux-oracle-5.4 vulnerabilities
==========================================================================

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

- Ubuntu 21.10
- Ubuntu 20.04 LTS
- 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-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-hwe-5.13: Linux hardware enablement (HWE) kernel
- 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 network traffic control implementation in the
Linux kernel contained a use-after-free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2022-1055)

It was discovered that the IPsec implementation in the Linux
kernel did not properly allocate enough memory when performing ESP
transformations, leading to a heap-based buffer overflow. A local
attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-27666)

Update instructions:

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

Ubuntu 21.10:
  linux-image-5.13.0-1020-kvm     5.13.0-1020.21
  linux-image-5.13.0-1021-aws     5.13.0-1021.23
  linux-image-5.13.0-1023-gcp     5.13.0-1023.28
  linux-image-5.13.0-1025-oracle  5.13.0-1025.30
  linux-image-5.13.0-39-generic   5.13.0-39.44
  linux-image-5.13.0-39-generic-64k  5.13.0-39.44
  linux-image-5.13.0-39-generic-lpae  5.13.0-39.44
  linux-image-5.13.0-39-lowlatency  5.13.0-39.44
  linux-image-aws                 5.13.0.1021.22
  linux-image-gcp                 5.13.0.1023.21
  linux-image-generic             5.13.0.39.48
  linux-image-generic-64k         5.13.0.39.48
  linux-image-generic-lpae        5.13.0.39.48
  linux-image-gke                 5.13.0.1023.21
  linux-image-kvm                 5.13.0.1020.20
  linux-image-lowlatency          5.13.0.39.48
  linux-image-oem-20.04           5.13.0.39.48
  linux-image-oracle              5.13.0.1025.25
  linux-image-virtual             5.13.0.39.48

Ubuntu 20.04 LTS:
  linux-image-5.13.0-39-generic   5.13.0-39.44~20.04.1
  linux-image-5.13.0-39-generic-64k  5.13.0-39.44~20.04.1
  linux-image-5.13.0-39-generic-lpae  5.13.0-39.44~20.04.1
  linux-image-5.13.0-39-lowlatency  5.13.0-39.44~20.04.1
  linux-image-5.4.0-1061-kvm      5.4.0-1061.64
  linux-image-5.4.0-1069-oracle   5.4.0-1069.75
  linux-image-5.4.0-107-generic   5.4.0-107.121
  linux-image-5.4.0-107-generic-lpae  5.4.0-107.121
  linux-image-5.4.0-107-lowlatency  5.4.0-107.121
  linux-image-5.4.0-1071-aws      5.4.0-1071.76
  linux-image-5.4.0-1074-azure    5.4.0-1074.77
  linux-image-aws-lts-20.04       5.4.0.1071.73
  linux-image-azure-lts-20.04     5.4.0.1074.72
  linux-image-generic             5.4.0.107.111
  linux-image-generic-64k-hwe-20.04  5.13.0.39.44~20.04.24
  linux-image-generic-hwe-20.04   5.13.0.39.44~20.04.24
  linux-image-generic-lpae        5.4.0.107.111
  linux-image-generic-lpae-hwe-20.04  5.13.0.39.44~20.04.24
  linux-image-kvm                 5.4.0.1061.60
  linux-image-lowlatency          5.4.0.107.111
  linux-image-lowlatency-hwe-20.04  5.13.0.39.44~20.04.24
  linux-image-oem                 5.4.0.107.111
  linux-image-oem-osp1            5.4.0.107.111
  linux-image-oracle-lts-20.04    5.4.0.1069.69
  linux-image-virtual             5.4.0.107.111
  linux-image-virtual-hwe-20.04   5.13.0.39.44~20.04.24

Ubuntu 18.04 LTS:
  linux-image-5.4.0-1069-oracle   5.4.0-1069.75~18.04.1
  linux-image-5.4.0-107-generic   5.4.0-107.121~18.04.1
  linux-image-5.4.0-107-generic-lpae  5.4.0-107.121~18.04.1
  linux-image-5.4.0-107-lowlatency  5.4.0-107.121~18.04.1
  linux-image-generic-hwe-18.04   5.4.0.107.121~18.04.92
  linux-image-generic-lpae-hwe-18.04  5.4.0.107.121~18.04.92
  linux-image-lowlatency-hwe-18.04  5.4.0.107.121~18.04.92
  linux-image-oem                 5.4.0.107.121~18.04.92
  linux-image-oem-osp1            5.4.0.107.121~18.04.92
  linux-image-oracle              5.4.0.1069.75~18.04.48
  linux-image-snapdragon-hwe-18.04  5.4.0.107.121~18.04.92
  linux-image-virtual-hwe-18.04   5.4.0.107.121~18.04.92

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-5358-1
  CVE-2022-1055, CVE-2022-27666

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.13.0-39.44
  https://launchpad.net/ubuntu/+source/linux-aws/5.13.0-1021.23
  https://launchpad.net/ubuntu/+source/linux-gcp/5.13.0-1023.28
  https://launchpad.net/ubuntu/+source/linux-kvm/5.13.0-1020.21
  https://launchpad.net/ubuntu/+source/linux-oracle/5.13.0-1025.30
  https://launchpad.net/ubuntu/+source/linux/5.4.0-107.121
  https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1071.76
  https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1074.77
  https://launchpad.net/ubuntu/+source/linux-hwe-5.13/5.13.0-39.44~20.04.1
  https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1061.64
  https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1069.75
  https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-107.121~18.04.1
  https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1069.75~18.04.1