==========================================================================
Ubuntu Security Notice USN-5339-1
March 22, 2022

linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15,
linux-dell300x, linux-hwe, linux-gcp-4.15, linux-kvm, linux-oracle,
linux-snapdragon vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- 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-dell300x: Linux kernel for Dell 300x platforms
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors
- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-hwe: Linux hardware enablement (HWE) kernel
- linux-azure: Linux kernel for Microsoft Azure Cloud systems

Details:

Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the
Linux kernel did not properly restrict access to the cgroups v1
release_agent feature. A local attacker could use this to gain
administrative privileges. (CVE-2022-0492)

It was discovered that an out-of-bounds (OOB) memory access flaw existed in
the f2fs module of the Linux kernel. A local attacker could use this issue
to cause a denial of service (system crash). (CVE-2021-3506)

Brendan Dolan-Gavitt discovered that the Marvell WiFi-Ex USB device driver
in the Linux kernel did not properly handle some error conditions. A
physically proximate attacker could use this to cause a denial of service
(system crash). (CVE-2021-43976)

It was discovered that the ARM Trusted Execution Environment (TEE)
subsystem in the Linux kernel contained a race condition leading to a use-
after-free vulnerability. A local attacker could use this to cause a denial
of service or possibly execute arbitrary code. (CVE-2021-44733)

It was discovered that the Phone Network protocol (PhoNet) implementation
in the Linux kernel did not properly perform reference counting in some
error conditions. A local attacker could possibly use this to cause a
denial of service (memory exhaustion). (CVE-2021-45095)

Samuel Page discovered that the Transparent Inter-Process Communication
(TIPC) protocol implementation in the Linux kernel contained a stack-based
buffer overflow. A remote attacker could use this to cause a denial of
service (system crash) for systems that have a TIPC bearer configured.
(CVE-2022-0435)

Update instructions:

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

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1038-dell300x  4.15.0-1038.43
  linux-image-4.15.0-1090-oracle  4.15.0-1090.99
  linux-image-4.15.0-1110-kvm     4.15.0-1110.113
  linux-image-4.15.0-1119-gcp     4.15.0-1119.133
  linux-image-4.15.0-1123-snapdragon  4.15.0-1123.132
  linux-image-4.15.0-1124-aws     4.15.0-1124.133
  linux-image-4.15.0-1134-azure   4.15.0-1134.147
  linux-image-4.15.0-173-generic  4.15.0-173.182
  linux-image-4.15.0-173-generic-lpae  4.15.0-173.182
  linux-image-4.15.0-173-lowlatency  4.15.0-173.182
  linux-image-aws-lts-18.04       4.15.0.1124.127
  linux-image-azure-lts-18.04     4.15.0.1134.107
  linux-image-dell300x            4.15.0.1038.40
  linux-image-gcp-lts-18.04       4.15.0.1119.138
  linux-image-generic             4.15.0.173.162
  linux-image-generic-lpae        4.15.0.173.162
  linux-image-kvm                 4.15.0.1110.106
  linux-image-lowlatency          4.15.0.173.162
  linux-image-oracle-lts-18.04    4.15.0.1090.100
  linux-image-snapdragon          4.15.0.1123.126
  linux-image-virtual             4.15.0.173.162

Ubuntu 16.04 ESM:
  linux-image-4.15.0-1090-oracle  4.15.0-1090.99~16.04.1
  linux-image-4.15.0-1124-aws-hwe  4.15.0-1124.133~16.04.1
  linux-image-4.15.0-173-generic  4.15.0-173.182~16.04.1
  linux-image-4.15.0-173-lowlatency  4.15.0-173.182~16.04.1
  linux-image-aws-hwe             4.15.0.1124.114
  linux-image-generic-hwe-16.04   4.15.0.173.165
  linux-image-lowlatency-hwe-16.04  4.15.0.173.165
  linux-image-oem                 4.15.0.173.165
  linux-image-oracle              4.15.0.1090.78
  linux-image-virtual-hwe-16.04   4.15.0.173.165

Ubuntu 14.04 ESM:
  linux-image-4.15.0-1134-azure   4.15.0-1134.147~14.04.1
  linux-image-azure               4.15.0.1134.107

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-5339-1
  CVE-2021-3506, CVE-2021-43976, CVE-2021-44733, CVE-2021-45095,
  CVE-2022-0435, CVE-2022-0492

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.15.0-173.182
  https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1124.133
  https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1134.147
  https://launchpad.net/ubuntu/+source/linux-dell300x/4.15.0-1038.43
  https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1119.133
  https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1110.113
  https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1090.99
  https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1123.132