==========================================================================
Ubuntu Security Notice USN-6647-1
February 21, 2024

linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp,
linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

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-4.15: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

It was discovered that a race condition existed in the ATM (Asynchronous
Transfer Mode) subsystem of the Linux kernel, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-51780)

It was discovered that a race condition existed in the Rose X.25 protocol
implementation in the Linux kernel, leading to a use-after- free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-51782)

It was discovered that the netfilter connection tracker for netlink in the
Linux kernel did not properly perform reference counting in some error
conditions. A local attacker could possibly use this to cause a denial of
service (memory exhaustion). (CVE-2023-7192)

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-4.15.0-1128-oracle  4.15.0-1128.139
   linux-image-4.15.0-1149-kvm     4.15.0-1149.154
   linux-image-4.15.0-1159-gcp     4.15.0-1159.176
   linux-image-4.15.0-1165-aws     4.15.0-1165.178
   linux-image-4.15.0-1174-azure   4.15.0-1174.189
   linux-image-4.15.0-222-generic  4.15.0-222.233
   linux-image-4.15.0-222-lowlatency  4.15.0-222.233
   linux-image-aws-lts-18.04       4.15.0.1165.163
   linux-image-azure-lts-18.04     4.15.0.1174.142
   linux-image-gcp-lts-18.04       4.15.0.1159.173
   linux-image-generic             4.15.0.222.206
   linux-image-kvm                 4.15.0.1149.140
   linux-image-lowlatency          4.15.0.222.206
   linux-image-oracle-lts-18.04    4.15.0.1128.133
   linux-image-virtual             4.15.0.222.206

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-1128-oracle  4.15.0-1128.139~16.04.1
   linux-image-4.15.0-1159-gcp     4.15.0-1159.176~16.04.1
   linux-image-4.15.0-1165-aws     4.15.0-1165.178~16.04.1
   linux-image-4.15.0-1174-azure   4.15.0-1174.189~16.04.1
   linux-image-4.15.0-222-generic  4.15.0-222.233~16.04.1
   linux-image-4.15.0-222-lowlatency  4.15.0-222.233~16.04.1
   linux-image-aws-hwe             4.15.0.1165.148
   linux-image-azure               4.15.0.1174.158
   linux-image-gcp                 4.15.0.1159.149
   linux-image-generic-hwe-16.04   4.15.0.222.6
   linux-image-gke                 4.15.0.1159.149
   linux-image-lowlatency-hwe-16.04  4.15.0.222.6
   linux-image-oem                 4.15.0.222.6
   linux-image-oracle              4.15.0.1128.109
   linux-image-virtual-hwe-16.04   4.15.0.222.6

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-6647-1
   CVE-2023-51780, CVE-2023-51782, CVE-2023-7192

Update on Critical Ubuntu Linux Kernel Vulnerabilities in USN-6647-1

February 21, 2024
Several security issues were fixed in the Linux kernel.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS (Available with Ubuntu Pro) - Ubuntu 16.04 LTS (Available with Ubuntu Pro) 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-4.15: Linux kernel for Microsoft Azure Cloud systems - linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe: Linux hardware enablement (HWE) kernel Details: It was discovered that a race condition existed in the ATM (Asynchronous Transfer Mode) subsystem of the Linux kernel, leadin...

Read the Full Advisory

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-4.15.0-1128-oracle 4.15.0-1128.139 linux-image-4.15.0-1149-kvm 4.15.0-1149.154 linux-image-4.15.0-1159-gcp 4.15.0-1159.176 linux-image-4.15.0-1165-aws 4.15.0-1165.178 linux-image-4.15.0-1174-azure 4.15.0-1174.189 linux-image-4.15.0-222-generic 4.15.0-222.233 linux-image-4.15.0-222-lowlatency 4.15.0-222.233 linux-image-aws-lts-18.04 4.15.0.1165.163 linux-image-azure-lts-18.04 4.15.0.1174.142 linux-image-gcp-lts-18.04 4.15.0.1159.173 linux-image-generic 4.15.0.222.206 linux-image-kvm 4.15.0.1149.140 linux-image-lowlatency 4.15.0.222.206 linux-image-oracle-lts-18.04 4.15.0.1128.133 linux-image-virtual 4.15.0.222.206 Ubuntu 16.04 LTS (Available with Ubuntu Pro): linux-image-4.15.0-1128-oracle 4.15.0-1128.139~16.04.1 linux-image-4.15.0-1159-gcp 4.15.0-1159.176~16.04.1 linux-image-4.15.0-1165-aws 4.15.0-1165.178~16.04.1 linux-image-4.15.0-1174-azure 4.15.0-1174.189~16.04.1 linux-image-4.15.0-222-generic 4.15.0-222.233~16.04.1 linux-image-4.15.0-222-lowlatency 4.15.0-222.233~16.04.1 linux-image-aws-hwe 4.15.0.1165.148 linux-image-azure 4.15.0.1174.158 linux-image-gcp 4.15.0.1159.149 linux-image-generic-hwe-16.04 4.15.0.222.6 linux-image-gke 4.15.0.1159.149 linux-image-lowlatency-hwe-16.04 4.15.0.222.6 linux-image-oem 4.15.0.222.6 linux-image-oracle 4.15.0.1128.109 linux-image-virtual-hwe-16.04 4.15.0.222.6 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-6647-1

CVE-2023-51780, CVE-2023-51782, CVE-2023-7192

Severity
Ubuntu Security Notice USN-6647-1

Package Information

Related News

The End of the Road for Linux 6.11: A Call to Upgrade to Kernel 6.12
3 - 5 min read
The Linux kernel community recently issued an EOL announcement regarding the 6.11 kernel series, urging sysadmins to upgrade quickly to 6.12 . This
A Linux Admin
3 - 6 min read
As 2025 approaches, we Linux admins are facing new and often unseen cloud-native security obstacles. While skilled at mitigating known risks,
Leveraging Insights from the Linux Foundation
3 - 5 min read
The Linux Foundation's recent Census III report provides critical insights for Linux administrators, information security professionals, and anyone
Chrome 131 Released: Emergency Security Update Fixes Over a Dozen Significant Vulns
3 - 6 min read
Google recently unveiled a critical security update to their popular web browser, Google Chrome, addressing over a dozen significant security
From Wayland Fixes to Security Boosts: Examining Qt 6.8.1
3 - 6 min read
The recent Qt 6.8.1 release brings significant updates and improvements, strengthening its reputation as a secure and reliable application
Exploring Arch Linux 2024.12.01: Security Implications & Notable Enhancements for Linux Admins
3 - 6 min read
The Arch Linux 2024.12.01 ISO release marks an impressive milestone, offering cutting-edge updates that enhance functionality, streamline
Deck the Halls with Enhanced Security: Linux Kernel 6.13
3 - 5 min read
As Linux admins and infosec professionals prepare for the holiday season, there's much cause for celebration this year! Linus Torvalds recently made
Lessons from Bootkitty: Securing Linux Systems Against UEFI Intrusions
3 - 5 min read
New Linux security threats mark critical junctures that challenge existing policies and test security protocols to their limit. One such milestone

Get the Latest News & Insights

Sign up to get the latest security news affecting Linux and open source delivered straight to your inbox.

© 2024 Guardian Digital, Inc All Rights Reserved