Ubuntu 20.04 LTS USN-6702-2 Moderate: Kernel Flaws and System Risks

ubuntu

March 20, 2024

Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

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

- linux-raspi: Linux kernel for Raspberry Pi systems

- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors

- 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-raspi-5.4: Linux kernel for Raspberry Pi systems

Details:

It was discovered that the NVIDIA Tegra XUSB pad controller driver in the

Linux kernel did not properly handle return values in certain error

conditions. A local attacker could use this to cause a denial of service

(system crash). (CVE-2023-23000)

It was discovered that the ARM Mali Display Processor driver implementation

in the Linux kernel did not properly handle certain error conditions. A

local attacker could possibly use this to cause a denial of service (system

crash). (CVE-2023-23004)

Notselw...

Read the Full Advisory

Topics Covered

security advisory Ubuntu Denial of Service kernel issue system crash AWS Raspberry Pi

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1040-xilinx-zynqmp  5.4.0-1040.44
   linux-image-5.4.0-1105-raspi    5.4.0-1105.117
   linux-image-5.4.0-1121-aws      5.4.0-1121.131
   linux-image-aws-lts-20.04       5.4.0.1121.118
   linux-image-raspi               5.4.0.1105.135
   linux-image-raspi2              5.4.0.1105.135
   linux-image-xilinx-zynqmp       5.4.0.1040.40

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-5.4.0-1105-raspi    5.4.0-1105.117~18.04.1
   linux-image-5.4.0-1121-aws      5.4.0-1121.131~18.04.1
   linux-image-5.4.0-1125-gcp      5.4.0-1125.134~18.04.1
   linux-image-aws                 5.4.0.1121.99
   linux-image-gcp                 5.4.0.1125.101
   linux-image-raspi-hwe-18.04     5.4.0.1105.102

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.