==========================================================================
Ubuntu Security Notice USN-6775-1
May 16, 2024

linux, linux-azure, linux-azure-5.15, linux-azure-fde,
linux-azure-fde-5.15, linux-gcp, linux-gcp-5.15, linux-gkeop,
linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-ibm-5.15,
linux-intel-iotg, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15,
linux-nvidia, linux-oracle, linux-raspi vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems
- 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-intel-iotg: Linux kernel for Intel IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-lowlatency: Linux low latency kernel
- linux-nvidia: Linux kernel for NVIDIA systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems
- linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gkeop-5.15: Linux kernel for Google Container Engine (GKE) systems
- linux-hwe-5.15: Linux hardware enablement (HWE) kernel
- linux-ibm-5.15: Linux kernel for IBM cloud systems
- linux-lowlatency-hwe-5.15: Linux low latency kernel

Details:

Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could possibly
use this to cause a denial of service (system crash). (CVE-2023-47233)

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:
   - MAC80211 subsystem;
   - Tomoyo security module;
(CVE-2024-26622, CVE-2023-52530)

Update instructions:

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

Ubuntu 22.04 LTS
   linux-image-5.15.0-1045-gkeop   5.15.0-1045.52
   linux-image-5.15.0-1055-ibm     5.15.0-1055.58
   linux-image-5.15.0-1055-nvidia  5.15.0-1055.56
   linux-image-5.15.0-1055-nvidia-lowlatency  5.15.0-1055.56
   linux-image-5.15.0-1055-raspi   5.15.0-1055.58
   linux-image-5.15.0-1057-intel-iotg  5.15.0-1057.63
   linux-image-5.15.0-1059-kvm     5.15.0-1059.64
   linux-image-5.15.0-1060-gcp     5.15.0-1060.68
   linux-image-5.15.0-1060-oracle  5.15.0-1060.66
   linux-image-5.15.0-1064-azure   5.15.0-1064.73
   linux-image-5.15.0-1064-azure-fde  5.15.0-1064.73.1
   linux-image-5.15.0-107-generic  5.15.0-107.117
   linux-image-5.15.0-107-generic-64k  5.15.0-107.117
   linux-image-5.15.0-107-generic-lpae  5.15.0-107.117
   linux-image-5.15.0-107-lowlatency  5.15.0-107.117
   linux-image-5.15.0-107-lowlatency-64k  5.15.0-107.117
   linux-image-azure-fde-lts-22.04  5.15.0.1064.73.42
   linux-image-azure-lts-22.04     5.15.0.1064.62
   linux-image-gcp-lts-22.04       5.15.0.1060.56
   linux-image-generic             5.15.0.107.107
   linux-image-generic-64k         5.15.0.107.107
   linux-image-generic-lpae        5.15.0.107.107
   linux-image-gkeop               5.15.0.1045.44
   linux-image-gkeop-5.15          5.15.0.1045.44
   linux-image-ibm                 5.15.0.1055.51
   linux-image-intel-iotg          5.15.0.1057.57
   linux-image-kvm                 5.15.0.1059.55
   linux-image-lowlatency          5.15.0.107.102
   linux-image-lowlatency-64k      5.15.0.107.102
   linux-image-nvidia              5.15.0.1055.55
   linux-image-nvidia-lowlatency   5.15.0.1055.55
   linux-image-oracle-lts-22.04    5.15.0.1060.56
   linux-image-raspi               5.15.0.1055.53
   linux-image-raspi-nolpae        5.15.0.1055.53
   linux-image-virtual             5.15.0.107.107

Ubuntu 20.04 LTS
   linux-image-5.15.0-1045-gkeop   5.15.0-1045.52~20.04.1
   linux-image-5.15.0-1055-ibm     5.15.0-1055.58~20.04.1
   linux-image-5.15.0-1060-gcp     5.15.0-1060.68~20.04.1
   linux-image-5.15.0-1064-azure   5.15.0-1064.73~20.04.1
   linux-image-5.15.0-1064-azure-fde  5.15.0-1064.73~20.04.1.1
   linux-image-5.15.0-107-generic  5.15.0-107.117~20.04.1
   linux-image-5.15.0-107-generic-64k  5.15.0-107.117~20.04.1
   linux-image-5.15.0-107-generic-lpae  5.15.0-107.117~20.04.1
   linux-image-5.15.0-107-lowlatency  5.15.0-107.117~20.04.1
   linux-image-5.15.0-107-lowlatency-64k  5.15.0-107.117~20.04.1
   linux-image-azure               5.15.0.1064.73~20.04.1
   linux-image-azure-cvm           5.15.0.1064.73~20.04.1
   linux-image-azure-fde           5.15.0.1064.73~20.04.1.42
   linux-image-gcp                 5.15.0.1060.68~20.04.1
   linux-image-generic-64k-hwe-20.04  5.15.0.107.117~20.04.1
   linux-image-generic-hwe-20.04   5.15.0.107.117~20.04.1
   linux-image-generic-lpae-hwe-20.04  5.15.0.107.117~20.04.1
   linux-image-gkeop-5.15          5.15.0.1045.52~20.04.1
   linux-image-ibm                 5.15.0.1055.58~20.04.1
   linux-image-lowlatency-64k-hwe-20.04  5.15.0.107.117~20.04.1
   linux-image-lowlatency-hwe-20.04  5.15.0.107.117~20.04.1
   linux-image-oem-20.04           5.15.0.107.117~20.04.1
   linux-image-oem-20.04b          5.15.0.107.117~20.04.1
   linux-image-oem-20.04c          5.15.0.107.117~20.04.1
   linux-image-oem-20.04d          5.15.0.107.117~20.04.1
   linux-image-virtual-hwe-20.04   5.15.0.107.117~20.04.1

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-6775-1
   CVE-2023-47233, CVE-2023-52530, CVE-2024-26622

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.15.0-107.117
   https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1064.73
   https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1064.73.1
   https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1060.68
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1045.52
   https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1055.58
   https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1057.63
   https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1059.64
   https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-107.117
   https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1055.56
   https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1060.66
   https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1055.58
   https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1064.73~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1064.73~20.04.1.1
   https://launchpad.net/ubuntu/+source/linux-gcp-5.15/5.15.0-1060.68~20.04.1
   https://launchpad.net/ubuntu/+source/linux-gkeop-5.15/5.15.0-1045.52~20.04.1
   https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-107.117~20.04.1
   https://launchpad.net/ubuntu/+source/linux-ibm-5.15/5.15.0-1055.58~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-107.117~20.04.1