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Ubuntu 14.04 LTS USN-6701-4 Critical: linux-azure Kernel Threats

ubuntu
Calendar Grey April 9, 2024
Dist Ubuntu Esm H88
Multiple significant vulnerabilities addressed in the Ubuntu linux-azure kernel impacting security; ensure updates are installed and restart system.
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

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 in the Linux

kernel did not properly handle block device modification while...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel issues linux-azure

Update Instructions

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

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-1175-azure   4.15.0-1175.190~14.04.1
   linux-image-azure               4.15.0.1175.141

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-6701-4

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
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Critical

Ubuntu Security Notice USN-6701-4

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel issues linux-azure

Package Information

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