Ubuntu 20.04 LTS USN-6702-1 Critical: Linux Kernel DoS Issues

ubuntu

March 19, 2024

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-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-iot: Linux kernel for IoT platforms

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

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

- linux-ibm-5.4: Linux kernel for IBM cloud systems

- linux-oracle-5.4: Linux kernel for Oracle Cloud 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 Processo...

Read the Full Advisory

Topics Covered

security advisory denial of service critical issue ubuntu system crash linux kernel local attacker

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1033-iot      5.4.0-1033.34
   linux-image-5.4.0-1068-ibm      5.4.0-1068.73
   linux-image-5.4.0-1081-bluefield  5.4.0-1081.88
   linux-image-5.4.0-1088-gkeop    5.4.0-1088.92
   linux-image-5.4.0-1109-kvm      5.4.0-1109.116
   linux-image-5.4.0-1120-oracle   5.4.0-1120.129
   linux-image-5.4.0-1125-gcp      5.4.0-1125.134
   linux-image-5.4.0-174-generic   5.4.0-174.193
   linux-image-5.4.0-174-generic-lpae  5.4.0-174.193
   linux-image-5.4.0-174-lowlatency  5.4.0-174.193
   linux-image-bluefield           5.4.0.1081.77
   linux-image-gcp-lts-20.04       5.4.0.1125.127
   linux-image-generic             5.4.0.174.172
   linux-image-generic-lpae        5.4.0.174.172
   linux-image-gkeop               5.4.0.1088.86
   linux-image-gkeop-5.4           5.4.0.1088.86
   linux-image-ibm-lts-20.04       5.4.0.1068.97
   linux-image-kvm                 5.4.0.1109.105
   linux-image-lowlatency          5.4.0.174.172
   linux-image-oem                 5.4.0.174.172
   linux-image-oem-osp1            5.4.0.174.172
   linux-image-oracle-lts-20.04    5.4.0.1120.113
   linux-image-virtual             5.4.0.174.172

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-5.4.0-1068-ibm      5.4.0-1068.73~18.04.1
   linux-image-5.4.0-1120-oracle   5.4.0-1120.129~18.04.1
   linux-image-5.4.0-174-generic   5.4.0-174.193~18.04.1
   linux-image-5.4.0-174-lowlatency  5.4.0-174.193~18.04.1
   linux-image-generic-hwe-18.04   5.4.0.174.193~18.04.142
   linux-image-ibm                 5.4.0.1068.78
   linux-image-lowlatency-hwe-18.04  5.4.0.174.193~18.04.142
   linux-image-oem                 5.4.0.174.193~18.04.142
   linux-image-oem-osp1            5.4.0.174.193~18.04.142
   linux-image-oracle              5.4.0.1120.129~18.04.92
   linux-image-snapdragon-hwe-18.04  5.4.0.174.193~18.04.142
   linux-image-virtual-hwe-18.04   5.4.0.174.193~18.04.142

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.