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Ubuntu 18.04 LTS USN-6701-2 Critical: Kernel Denial Of Service Threats

ubuntu
Calendar Grey March 20, 2024
Dist Ubuntu Esm H88
Explore critical security updates for Ubuntu’s GCP kernel designed to address threats like system failures and data leaks, safeguarding sensitive data in cloud environments
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems

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

Details:

Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did

not properly perform permissions checks when handling HCI sockets. A

physically proximate attacker could use this to cause a denial of service

(bluetooth communication). (CVE-2023-2002)

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 Spectre-BHB mitigations were missing for Ampere

processors. A local attacker could potentially use this to expose sensitive

information. (CVE-2023-3006)

It was discovered that the ext4 file system implementation ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel ubuntu system crash data exposure

Update Instructions

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-1160-gcp     4.15.0-1160.177
   linux-image-gcp-lts-18.04       4.15.0.1160.173

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-1160-gcp     4.15.0-1160.177~16.04.1
   linux-image-gcp                 4.15.0.1160.150
   linux-image-gke                 4.15.0.1160.150

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-6701-2

https://ubuntu.com/security/notices/USN-6701-1

CVE-2023-2002, CVE-2023-23000, CVE-2023-3006, CVE-2023-34256,

CVE-2023-39197, CVE-2023-4132, CVE-2023-46838, CVE-2023-51781,

CVE-2023-6121, CVE-2024-0775, CVE-2024-1086, CVE-2024-24855

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6701-2

Topics%20covered

Topics Covered

security advisory denial of service kernel ubuntu system crash data exposure

Package Information

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