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Ubuntu 22.04 LTS USN-6332-1 critical: Azure kernel denials and risks

ubuntu
Calendar Grey September 1, 2023
Dist Ubuntu Esm H88
Significant vulnerabilities resolved in the Ubuntu Linux kernel for Azure environments, necessitating immediate updates to avert potential security breaches.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

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

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

- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems

Details:

Daniel Moghimi discovered that some Intel(R) Processors did not properly

clear microarchitectural state after speculative execution of various

instructions. A local unprivileged user could use this to obtain to

sensitive information. (CVE-2022-40982)

William Zhao discovered that the Traffic Control (TC) subsystem in the

Linux kernel did not properly handle network packet retransmission in

certain situations. A local attacker could use this to cause a denial of

service (kernel deadlock). (CVE-2022-4269)

It was discovered that the NTFS file system implementation in the Linux

kernel did not properly check buffer indexes in certain situations, leading

to an out-of-bounds read vu...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel update Ubuntu kernel local attack system crash sensitive information Azure

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1045-azure   5.15.0-1045.52
   linux-image-5.15.0-1045-azure-fde  5.15.0-1045.52.1
   linux-image-azure-fde-lts-22.04  5.15.0.1045.52.23
   linux-image-azure-lts-22.04     5.15.0.1045.41

Ubuntu 20.04 LTS:
   linux-image-5.15.0-1045-azure   5.15.0-1045.52~20.04.1
   linux-image-azure               5.15.0.1045.52~20.04.34
   linux-image-azure-cvm           5.15.0.1045.52~20.04.34

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.

References

https://ubuntu.com/security/notices/USN-6332-1

CVE-2022-40982, CVE-2022-4269, CVE-2022-48502, CVE-2023-0597,

CVE-2023-1611, CVE-2023-1855, CVE-2023-1990, CVE-2023-2002,

CVE-2023-20593, CVE-2023-2124, CVE-2023-21400, CVE-2023-2163,

CVE-2023-2194, CVE-2023-2235, CVE-2023-2269, CVE-2023-23004,

CVE-2023-28466, CVE-2023-30772, CVE-2023-3141, CVE-2023-32248,

CVE-2023-3268, CVE-2023-33203, CVE-2023-33288, CVE-2023-35823,

CVE-2023-35824, CVE-2023-35828, CVE-2023-35829, CVE-2023-3609,

CVE-2023-3610, CVE-2023-3611, CVE-2023-3776, CVE-2023-3777,

CVE-2023-3995, CVE-2023-4004, CVE-2023-4015

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6332-1

Topics%20covered

Topics Covered

security advisory denial of service kernel update Ubuntu kernel local attack system crash sensitive information Azure

Package Information

https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1045.52
https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1045.52.1
https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1045.52~20.04.1

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