Ubuntu 23.10: USN-6724-1 Critical Denial Of Service Risks

ubuntu

April 9, 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-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

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

- linux-laptop: Linux kernel for Lenovo X13s ARM laptops

- linux-lowlatency: Linux low latency kernel

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-starfive: Linux kernel for StarFive processors

- linux-azure-6.5: Linux kernel for Microsoft Azure cloud systems

- linux-gcp-6.5: Linux kernel for Google Cloud Platform (GCP) systems

- linux-hwe-6.5: Linux hardware enablement (HWE) kernel

- linux-lowlatency-hwe-6.5: Linux low latency kernel

- linux-oem-6.5: Linux kernel for OEM systems

- linux-oracle-6.5: Linux kernel for Oracle Cloud systems

- linux-starfive-6.5: Linux kernel for StarFive processors

Details:

Pratyush Yadav discovered that the Xen network back...

Read the Full Advisory

Topics Covered

security advisory denial of service critical update kernel ubuntu system crash local exploits

Update Instructions

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

Ubuntu 23.10:
   linux-image-6.5.0-1011-starfive  6.5.0-1011.12
   linux-image-6.5.0-1013-laptop   6.5.0-1013.16
   linux-image-6.5.0-1017-aws      6.5.0-1017.17
   linux-image-6.5.0-1017-gcp      6.5.0-1017.17
   linux-image-6.5.0-1018-azure    6.5.0-1018.19
   linux-image-6.5.0-1018-azure-fde  6.5.0-1018.19
   linux-image-6.5.0-1020-oracle   6.5.0-1020.20
   linux-image-6.5.0-1020-oracle-64k  6.5.0-1020.20
   linux-image-6.5.0-27-generic    6.5.0-27.28
   linux-image-6.5.0-27-generic-64k  6.5.0-27.28
   linux-image-6.5.0-27-lowlatency  6.5.0-27.28.1
   linux-image-6.5.0-27-lowlatency-64k  6.5.0-27.28.1
   linux-image-aws                 6.5.0.1017.17
   linux-image-azure               6.5.0.1018.22
   linux-image-azure-fde           6.5.0.1018.22
   linux-image-gcp                 6.5.0.1017.17
   linux-image-generic             6.5.0.27.27
   linux-image-generic-64k         6.5.0.27.27
   linux-image-generic-lpae        6.5.0.27.27
   linux-image-kvm                 6.5.0.27.27
   linux-image-laptop-23.10        6.5.0.1013.16
   linux-image-lowlatency          6.5.0.27.28.18
   linux-image-lowlatency-64k      6.5.0.27.28.18
   linux-image-oracle              6.5.0.1020.22
   linux-image-oracle-64k          6.5.0.1020.22
   linux-image-starfive            6.5.0.1011.13
   linux-image-virtual             6.5.0.27.27

Ubuntu 22.04 LTS:
   linux-image-6.5.0-1011-starfive  6.5.0-1011.12~22.04.1
   linux-image-6.5.0-1017-gcp      6.5.0-1017.17~22.04.1
   linux-image-6.5.0-1018-azure    6.5.0-1018.19~22.04.2
   linux-image-6.5.0-1018-azure-fde  6.5.0-1018.19~22.04.2
   linux-image-6.5.0-1019-oem      6.5.0-1019.20
   linux-image-6.5.0-1020-oracle   6.5.0-1020.20~22.04.1
   linux-image-6.5.0-1020-oracle-64k  6.5.0-1020.20~22.04.1
   linux-image-6.5.0-27-generic    6.5.0-27.28~22.04.1
   linux-image-6.5.0-27-generic-64k  6.5.0-27.28~22.04.1
   linux-image-6.5.0-27-lowlatency  6.5.0-27.28.1~22.04.1
   linux-image-6.5.0-27-lowlatency-64k  6.5.0-27.28.1~22.04.1
   linux-image-azure               6.5.0.1018.19~22.04.2
   linux-image-azure-fde           6.5.0.1018.19~22.04.2
   linux-image-gcp                 6.5.0.1017.17~22.04.1
   linux-image-generic-64k-hwe-22.04  6.5.0.27.28~22.04.1
   linux-image-generic-hwe-22.04   6.5.0.27.28~22.04.1
   linux-image-lowlatency-64k-hwe-22.04  6.5.0.27.28.1~22.04.1
   linux-image-lowlatency-hwe-22.04  6.5.0.27.28.1~22.04.1
   linux-image-oem-22.04           6.5.0.1019.21
   linux-image-oem-22.04a          6.5.0.1019.21
   linux-image-oem-22.04b          6.5.0.1019.21
   linux-image-oem-22.04c          6.5.0.1019.21
   linux-image-oem-22.04d          6.5.0.1019.21
   linux-image-oracle              6.5.0.1020.20~22.04.1
   linux-image-oracle-64k          6.5.0.1020.20~22.04.1
   linux-image-starfive            6.5.0.1011.12~22.04.1
   linux-image-virtual-hwe-22.04   6.5.0.27.28~22.04.1

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.