Ubuntu 23.04 LTS USN-6534-1 critical: kernel denial of service threats

ubuntu

December 5, 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-lowlatency: Linux low latency kernel

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi: Linux kernel for Raspberry Pi systems

- linux-starfive: Linux kernel for StarFive processors

- linux-aws-6.2: Linux kernel for Amazon Web Services (AWS) systems

- linux-azure-6.2: Linux kernel for Microsoft Azure cloud systems

- linux-azure-fde-6.2: Linux kernel for Microsoft Azure CVM cloud systems

Details:

It was discovered that the USB subsystem in the Linux kernel contained a

race condition while handling device descriptors in certain situations,

leading to a out-of-bounds read vulnerability. A local attacker could

possibly use this to cause a denial of service (system crash).

(CVE-2023-37453)

Lin Ma discovered that t...

Read the Full Advisory

Topics Covered

security advisory denial of service kernel security updates ubuntu system crash

Update Instructions

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

Ubuntu 23.04:
   linux-image-6.2.0-1010-starfive  6.2.0-1010.11
   linux-image-6.2.0-1017-aws      6.2.0-1017.17
   linux-image-6.2.0-1017-oracle   6.2.0-1017.18
   linux-image-6.2.0-1018-azure    6.2.0-1018.18
   linux-image-6.2.0-1018-lowlatency  6.2.0-1018.18
   linux-image-6.2.0-1018-lowlatency-64k  6.2.0-1018.18
   linux-image-6.2.0-1018-raspi    6.2.0-1018.20
   linux-image-6.2.0-39-generic    6.2.0-39.40
   linux-image-6.2.0-39-generic-64k  6.2.0-39.40
   linux-image-6.2.0-39-generic-lpae  6.2.0-39.40
   linux-image-aws                 6.2.0.1017.18
   linux-image-azure               6.2.0.1018.18
   linux-image-generic             6.2.0.39.39
   linux-image-generic-64k         6.2.0.39.39
   linux-image-generic-lpae        6.2.0.39.39
   linux-image-lowlatency          6.2.0.1018.18
   linux-image-lowlatency-64k      6.2.0.1018.18
   linux-image-oracle              6.2.0.1017.17
   linux-image-raspi               6.2.0.1018.21
   linux-image-raspi-nolpae        6.2.0.1018.21
   linux-image-starfive            6.2.0.1010.13
   linux-image-virtual             6.2.0.39.39

Ubuntu 22.04 LTS:
   linux-image-6.2.0-1017-aws      6.2.0-1017.17~22.04.1
   linux-image-6.2.0-1018-azure    6.2.0-1018.18~22.04.1
   linux-image-6.2.0-1018-azure-fde  6.2.0-1018.18~22.04.1.1
   linux-image-aws                 6.2.0.1017.17~22.04.1
   linux-image-azure               6.2.0.1018.18~22.04.1
   linux-image-azure-fde           6.2.0.1018.18~22.04.1.15

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.