==========================================================================
Ubuntu Security Notice USN-6741-1
April 19, 2024

linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4,
linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gkeop, linux-hwe-5.4,
linux-ibm, linux-ibm-5.4, linux-iot, linux-kvm, linux-oracle,
linux-oracle-5.4, linux-raspi, linux-raspi-5.4, linux-xilinx-zynqmp
vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 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: Linux kernel for Microsoft Azure Cloud systems
- linux-bluefield: Linux kernel for NVIDIA BlueField platforms
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-iot: Linux kernel for IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors
- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-ibm-5.4: Linux kernel for IBM cloud systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems
- linux-raspi-5.4: Linux kernel for Raspberry Pi systems

Details:

Daniele Antonioli discovered that the Secure Simple Pairing and Secure
Connections pairing in the Bluetooth protocol could allow an
unauthenticated user to complete authentication without pairing
credentials. A physically proximate attacker placed between two Bluetooth
devices could use this to subsequently impersonate one of the paired
devices. (CVE-2023-24023)

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:
   - JFS file system;
   - BPF subsystem;
   - Netfilter;
(CVE-2023-52603, CVE-2023-52600, CVE-2024-26581, CVE-2024-26589)

Update instructions:

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1035-iot      5.4.0-1035.36
   linux-image-5.4.0-1042-xilinx-zynqmp  5.4.0-1042.46
   linux-image-5.4.0-1070-ibm      5.4.0-1070.75
   linux-image-5.4.0-1083-bluefield  5.4.0-1083.90
   linux-image-5.4.0-1090-gkeop    5.4.0-1090.94
   linux-image-5.4.0-1107-raspi    5.4.0-1107.119
   linux-image-5.4.0-1111-kvm      5.4.0-1111.118
   linux-image-5.4.0-1122-oracle   5.4.0-1122.131
   linux-image-5.4.0-1123-aws      5.4.0-1123.133
   linux-image-5.4.0-1127-gcp      5.4.0-1127.136
   linux-image-5.4.0-1128-azure    5.4.0-1128.135
   linux-image-5.4.0-177-generic   5.4.0-177.197
   linux-image-5.4.0-177-generic-lpae  5.4.0-177.197
   linux-image-5.4.0-177-lowlatency  5.4.0-177.197
   linux-image-aws-lts-20.04       5.4.0.1123.120
   linux-image-azure-lts-20.04     5.4.0.1128.122
   linux-image-bluefield           5.4.0.1083.79
   linux-image-gcp-lts-20.04       5.4.0.1127.129
   linux-image-generic             5.4.0.177.175
   linux-image-generic-lpae        5.4.0.177.175
   linux-image-gkeop               5.4.0.1090.88
   linux-image-gkeop-5.4           5.4.0.1090.88
   linux-image-ibm-lts-20.04       5.4.0.1070.99
   linux-image-kvm                 5.4.0.1111.107
   linux-image-lowlatency          5.4.0.177.175
   linux-image-oem                 5.4.0.177.175
   linux-image-oem-osp1            5.4.0.177.175
   linux-image-oracle-lts-20.04    5.4.0.1122.115
   linux-image-raspi               5.4.0.1107.137
   linux-image-raspi2              5.4.0.1107.137
   linux-image-virtual             5.4.0.177.175
   linux-image-xilinx-zynqmp       5.4.0.1042.42

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-5.4.0-1070-ibm      5.4.0-1070.75~18.04.1
   linux-image-5.4.0-1107-raspi    5.4.0-1107.119~18.04.1
   linux-image-5.4.0-1122-oracle   5.4.0-1122.131~18.04.1
   linux-image-5.4.0-1123-aws      5.4.0-1123.133~18.04.1
   linux-image-5.4.0-1127-gcp      5.4.0-1127.136~18.04.1
   linux-image-5.4.0-1128-azure    5.4.0-1128.135~18.04.1
   linux-image-5.4.0-177-generic   5.4.0-177.197~18.04.1
   linux-image-5.4.0-177-lowlatency  5.4.0-177.197~18.04.1
   linux-image-aws                 5.4.0.1123.133~18.04.1
   linux-image-azure               5.4.0.1128.135~18.04.1
   linux-image-gcp                 5.4.0.1127.136~18.04.1
   linux-image-generic-hwe-18.04   5.4.0.177.197~18.04.1
   linux-image-ibm                 5.4.0.1070.75~18.04.1
   linux-image-lowlatency-hwe-18.04  5.4.0.177.197~18.04.1
   linux-image-oem                 5.4.0.177.197~18.04.1
   linux-image-oem-osp1            5.4.0.177.197~18.04.1
   linux-image-oracle              5.4.0.1122.131~18.04.1
   linux-image-raspi-hwe-18.04     5.4.0.1107.119~18.04.1
   linux-image-snapdragon-hwe-18.04  5.4.0.177.197~18.04.1
   linux-image-virtual-hwe-18.04   5.4.0.177.197~18.04.1

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-6741-1
   CVE-2023-24023, CVE-2023-52600, CVE-2023-52603, CVE-2024-26581,
   CVE-2024-26589

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.4.0-177.197
   https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1123.133
   https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1128.135
   https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1083.90
   https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1127.136
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1090.94
   https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1070.75
   https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1035.36
   https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1111.118
   https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1122.131
   https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1107.119
   https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1042.46