Ubuntu 22.04 LTS USN-6246-1 Critical: Kernel Memory Flaws Exploited

ubuntu

July 25, 2023

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-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems

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

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

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

- linux-ibm: Linux kernel for IBM cloud systems

- linux-intel-iotg: Linux kernel for Intel IoT platforms

- linux-kvm: Linux kernel for cloud environments

- linux-lowlatency: Linux low latency kernel

- linux-nvidia: Linux kernel for NVIDIA systems

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi: Linux kernel for Raspberry Pi systems

- linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems

- linux-azure-5.15: Linux kernel for Microsoft Azure ...

Read the Full Advisory

Topics Covered

security advisory critical DoS Ubuntu kernel memory issue out-of-bounds

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1024-gkeop   5.15.0-1024.29
   linux-image-5.15.0-1029-nvidia  5.15.0-1029.29
   linux-image-5.15.0-1029-nvidia-lowlatency  5.15.0-1029.29
   linux-image-5.15.0-1034-ibm     5.15.0-1034.37
   linux-image-5.15.0-1034-raspi   5.15.0-1034.37
   linux-image-5.15.0-1034-raspi-nolpae  5.15.0-1034.37
   linux-image-5.15.0-1036-intel-iotg  5.15.0-1036.41
   linux-image-5.15.0-1038-gcp     5.15.0-1038.46
   linux-image-5.15.0-1038-gke     5.15.0-1038.43
   linux-image-5.15.0-1038-kvm     5.15.0-1038.43
   linux-image-5.15.0-1039-oracle  5.15.0-1039.45
   linux-image-5.15.0-1040-aws     5.15.0-1040.45
   linux-image-5.15.0-1042-azure   5.15.0-1042.49
   linux-image-5.15.0-1042-azure-fde  5.15.0-1042.49.1
   linux-image-5.15.0-78-generic   5.15.0-78.85
   linux-image-5.15.0-78-generic-64k  5.15.0-78.85
   linux-image-5.15.0-78-generic-lpae  5.15.0-78.85
   linux-image-5.15.0-78-lowlatency  5.15.0-78.85
   linux-image-5.15.0-78-lowlatency-64k  5.15.0-78.85
   linux-image-aws-lts-22.04       5.15.0.1040.39
   linux-image-azure               5.15.0.1042.38
   linux-image-azure-fde           5.15.0.1042.49.20
   linux-image-azure-fde-lts-22.04  5.15.0.1042.49.20
   linux-image-azure-lts-22.04     5.15.0.1042.38
   linux-image-gcp-lts-22.04       5.15.0.1038.34
   linux-image-generic             5.15.0.78.75
   linux-image-generic-64k         5.15.0.78.75
   linux-image-generic-lpae        5.15.0.78.75
   linux-image-gke                 5.15.0.1038.37
   linux-image-gke-5.15            5.15.0.1038.37
   linux-image-gkeop               5.15.0.1024.23
   linux-image-gkeop-5.15          5.15.0.1024.23
   linux-image-ibm                 5.15.0.1034.30
   linux-image-intel-iotg          5.15.0.1036.35
   linux-image-kvm                 5.15.0.1038.34
   linux-image-lowlatency          5.15.0.78.82
   linux-image-lowlatency-64k      5.15.0.78.82
   linux-image-nvidia              5.15.0.1029.29
   linux-image-nvidia-lowlatency   5.15.0.1029.29
   linux-image-oracle              5.15.0.1039.34
   linux-image-raspi               5.15.0.1034.32
   linux-image-raspi-nolpae        5.15.0.1034.32
   linux-image-virtual             5.15.0.78.75

Ubuntu 20.04 LTS:
   linux-image-5.15.0-1024-gkeop   5.15.0-1024.29~20.04.1
   linux-image-5.15.0-1038-gcp     5.15.0-1038.46~20.04.1
   linux-image-5.15.0-1038-gke     5.15.0-1038.43~20.04.1
   linux-image-5.15.0-1039-oracle  5.15.0-1039.45~20.04.1
   linux-image-5.15.0-1040-aws     5.15.0-1040.45~20.04.1
   linux-image-5.15.0-1042-azure   5.15.0-1042.49~20.04.1
   linux-image-5.15.0-1042-azure-fde  5.15.0-1042.49~20.04.1.1
   linux-image-5.15.0-78-generic   5.15.0-78.85~20.04.1
   linux-image-5.15.0-78-generic-64k  5.15.0-78.85~20.04.1
   linux-image-5.15.0-78-generic-lpae  5.15.0-78.85~20.04.1
   linux-image-5.15.0-78-lowlatency  5.15.0-78.85~20.04.1
   linux-image-5.15.0-78-lowlatency-64k  5.15.0-78.85~20.04.1
   linux-image-aws                 5.15.0.1040.45~20.04.29
   linux-image-azure               5.15.0.1042.49~20.04.32
   linux-image-azure-cvm           5.15.0.1042.49~20.04.32
   linux-image-azure-fde           5.15.0.1042.49~20.04.1.21
   linux-image-gcp                 5.15.0.1038.46~20.04.1
   linux-image-generic-64k-hwe-20.04  5.15.0.78.85~20.04.38
   linux-image-generic-hwe-20.04   5.15.0.78.85~20.04.38
   linux-image-generic-lpae-hwe-20.04  5.15.0.78.85~20.04.38
   linux-image-gke-5.15            5.15.0.1038.43~20.04.1
   linux-image-gkeop-5.15          5.15.0.1024.29~20.04.20
   linux-image-lowlatency-64k-hwe-20.04  5.15.0.78.85~20.04.35
   linux-image-lowlatency-hwe-20.04  5.15.0.78.85~20.04.35
   linux-image-oem-20.04           5.15.0.78.85~20.04.38
   linux-image-oem-20.04b          5.15.0.78.85~20.04.38
   linux-image-oem-20.04c          5.15.0.78.85~20.04.38
   linux-image-oem-20.04d          5.15.0.78.85~20.04.38
   linux-image-oracle              5.15.0.1039.45~20.04.1
   linux-image-virtual-hwe-20.04   5.15.0.78.85~20.04.38

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.