==========================================================================
Ubuntu Security Notice USN-7234-1
January 28, 2025

linux, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-ibm,
linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi
vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-bluefield: Linux kernel for NVIDIA BlueField platforms
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-ibm-5.4: Linux kernel for IBM cloud systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems

Details:

Ye Zhang and Nicolas Wu discovered that the io_uring subsystem in the Linux
kernel did not properly handle locking for rings with IOPOLL, leading to a
double-free vulnerability. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2023-21400)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
  - TTY drivers;
  - Netfilter;
  - Network traffic control;
  - VMware vSockets driver;
(CVE-2024-53141, CVE-2024-53103, CVE-2024-40967, CVE-2024-53164)

Update instructions:

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

Ubuntu 20.04 LTS
  linux-image-5.4.0-1085-ibm      5.4.0-1085.90
  linux-image-5.4.0-1098-bluefield  5.4.0-1098.105
  linux-image-5.4.0-1122-raspi    5.4.0-1122.134
  linux-image-5.4.0-1126-kvm      5.4.0-1126.134
  linux-image-5.4.0-1137-oracle   5.4.0-1137.146
  linux-image-5.4.0-1142-gcp      5.4.0-1142.151
  linux-image-5.4.0-205-generic   5.4.0-205.225
  linux-image-5.4.0-205-generic-lpae  5.4.0-205.225
  linux-image-5.4.0-205-lowlatency  5.4.0-205.225
  linux-image-bluefield           5.4.0.1098.94
  linux-image-gcp-lts-20.04       5.4.0.1142.144
  linux-image-generic             5.4.0.205.201
  linux-image-generic-lpae        5.4.0.205.201
  linux-image-ibm-lts-20.04       5.4.0.1085.114
  linux-image-kvm                 5.4.0.1126.122
  linux-image-lowlatency          5.4.0.205.201
  linux-image-oem                 5.4.0.205.201
  linux-image-oem-osp1            5.4.0.205.201
  linux-image-oracle-lts-20.04    5.4.0.1137.130
  linux-image-raspi               5.4.0.1122.152
  linux-image-raspi2              5.4.0.1122.152
  linux-image-virtual             5.4.0.205.201

Ubuntu 18.04 LTS
  linux-image-5.4.0-1085-ibm      5.4.0-1085.90~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-1137-oracle   5.4.0-1137.146~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-1142-gcp      5.4.0-1142.151~18.04.1
                                  Available with Ubuntu Pro
  linux-image-gcp                 5.4.0.1142.151~18.04.1
                                  Available with Ubuntu Pro
  linux-image-ibm                 5.4.0.1085.90~18.04.1
                                  Available with Ubuntu Pro
  linux-image-oracle              5.4.0.1137.146~18.04.1
                                  Available with Ubuntu Pro

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-7234-1
  CVE-2023-21400, CVE-2024-40967, CVE-2024-53103, CVE-2024-53141,
  CVE-2024-53164

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.4.0-205.225
  https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1098.105
  https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1142.151
  https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1085.90
  https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1126.134
  https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1137.146
  https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1122.134