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Ubuntu 18.04 LTS USN-6701-1 Critical: Kernel Denial Of Service Threats

ubuntu
Calendar Grey March 19, 2024
Dist Ubuntu Esm H88
Debian Security Alert DSA-1234-1 identifies multiple vulnerabilities in the Python package and recommends immediate upgrades.
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-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

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

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 ex...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel information exposure ubuntu system crash data exposure linux kernel bluetooth cloud environments bluetooth security

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-4.15.0-1129-oracle  4.15.0-1129.140
   linux-image-4.15.0-1150-kvm     4.15.0-1150.155
   linux-image-4.15.0-1166-aws     4.15.0-1166.179
   linux-image-4.15.0-223-generic  4.15.0-223.235
   linux-image-4.15.0-223-lowlatency  4.15.0-223.235
   linux-image-aws-lts-18.04       4.15.0.1166.164
   linux-image-generic             4.15.0.223.207
   linux-image-kvm                 4.15.0.1150.141
   linux-image-lowlatency          4.15.0.223.207
   linux-image-oracle-lts-18.04    4.15.0.1129.134
   linux-image-virtual             4.15.0.223.207

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-223-generic  4.15.0-223.235~16.04.1
   linux-image-4.15.0-223-lowlatency  4.15.0-223.235~16.04.1
   linux-image-generic-hwe-16.04   4.15.0.223.7
   linux-image-lowlatency-hwe-16.04  4.15.0.223.7
   linux-image-oem                 4.15.0.223.7
   linux-image-virtual-hwe-16.04   4.15.0.223.7

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-6701-1

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-6701-1

Topics%20covered

Topics Covered

security advisory denial of service kernel information exposure ubuntu system crash data exposure linux kernel bluetooth cloud environments bluetooth security

Package Information

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