==========================================================================
Ubuntu Security Notice USN-6831-1
June 12, 2024

linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp,
linux-gcp-5.4, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4,
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

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-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-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:

It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of service.
(CVE-2024-0841)

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:
   - ARM32 architecture;
   - PowerPC architecture;
   - x86 architecture;
   - DMA engine subsystem;
   - EFI core;
   - GPU drivers;
   - InfiniBand drivers;
   - Multiple devices driver;
   - Network drivers;
   - Power supply drivers;
   - TCM subsystem;
   - Userspace I/O drivers;
   - USB subsystem;
   - Framebuffer layer;
   - AFS file system;
   - File systems infrastructure;
   - BTRFS file system;
   - Ext4 file system;
   - Bluetooth subsystem;
   - Networking core;
   - IPv4 networking;
   - IPv6 networking;
   - L2TP protocol;
   - MAC80211 subsystem;
   - Netfilter;
   - Netlink;
   - Wireless networking;
(CVE-2024-26748, CVE-2024-27417, CVE-2024-26840, CVE-2023-52504,
CVE-2024-26790, CVE-2024-26763, CVE-2024-26805, CVE-2024-26773,
CVE-2021-47063, CVE-2024-26791, CVE-2024-27413, CVE-2024-26788,
CVE-2024-27405, CVE-2024-26845, CVE-2024-26766, CVE-2021-47070,
CVE-2024-26839, CVE-2024-26712, CVE-2024-27412, CVE-2024-26752,
CVE-2024-26778, CVE-2024-26735, CVE-2024-26736, CVE-2024-27410,
CVE-2024-26779, CVE-2024-26804, CVE-2024-26749, CVE-2024-26793,
CVE-2024-26764, CVE-2024-26751, CVE-2024-35811, CVE-2024-26835,
CVE-2024-26772, CVE-2024-26777, CVE-2024-26688, CVE-2024-27416,
CVE-2024-26801, CVE-2024-26733, CVE-2024-27414, CVE-2024-26754,
CVE-2024-26848)

Update instructions:

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

Ubuntu 20.04 LTS
   linux-image-5.4.0-1045-xilinx-zynqmp  5.4.0-1045.49
   linux-image-5.4.0-1073-ibm      5.4.0-1073.78
   linux-image-5.4.0-1093-gkeop    5.4.0-1093.97
   linux-image-5.4.0-1110-raspi    5.4.0-1110.122
   linux-image-5.4.0-1114-kvm      5.4.0-1114.121
   linux-image-5.4.0-1125-oracle   5.4.0-1125.134
   linux-image-5.4.0-1126-aws      5.4.0-1126.136
   linux-image-5.4.0-1130-gcp      5.4.0-1130.139
   linux-image-5.4.0-1131-azure    5.4.0-1131.138
   linux-image-5.4.0-186-generic   5.4.0-186.206
   linux-image-5.4.0-186-generic-lpae  5.4.0-186.206
   linux-image-5.4.0-186-lowlatency  5.4.0-186.206
   linux-image-aws-lts-20.04       5.4.0.1126.123
   linux-image-azure-lts-20.04     5.4.0.1131.125
   linux-image-gcp-lts-20.04       5.4.0.1130.132
   linux-image-generic             5.4.0.186.184
   linux-image-generic-lpae        5.4.0.186.184
   linux-image-gkeop               5.4.0.1093.91
   linux-image-gkeop-5.4           5.4.0.1093.91
   linux-image-ibm-lts-20.04       5.4.0.1073.102
   linux-image-kvm                 5.4.0.1114.110
   linux-image-lowlatency          5.4.0.186.184
   linux-image-oem                 5.4.0.186.184
   linux-image-oem-osp1            5.4.0.186.184
   linux-image-oracle-lts-20.04    5.4.0.1125.118
   linux-image-raspi               5.4.0.1110.140
   linux-image-raspi2              5.4.0.1110.140
   linux-image-virtual             5.4.0.186.184
   linux-image-xilinx-zynqmp       5.4.0.1045.45

Ubuntu 18.04 LTS
   linux-image-5.4.0-1073-ibm      5.4.0-1073.78~18.04.1
                                   Available with Ubuntu Pro
   linux-image-5.4.0-1110-raspi    5.4.0-1110.122~18.04.1
                                   Available with Ubuntu Pro
   linux-image-5.4.0-1125-oracle   5.4.0-1125.134~18.04.1
                                   Available with Ubuntu Pro
   linux-image-5.4.0-1126-aws      5.4.0-1126.136~18.04.1
                                   Available with Ubuntu Pro
   linux-image-5.4.0-1130-gcp      5.4.0-1130.139~18.04.1
                                   Available with Ubuntu Pro
   linux-image-5.4.0-1131-azure    5.4.0-1131.138~18.04.1
                                   Available with Ubuntu Pro
   linux-image-5.4.0-186-generic   5.4.0-186.206~18.04.1
                                   Available with Ubuntu Pro
   linux-image-5.4.0-186-lowlatency  5.4.0-186.206~18.04.1
                                   Available with Ubuntu Pro
   linux-image-aws                 5.4.0.1126.136~18.04.1
                                   Available with Ubuntu Pro
   linux-image-azure               5.4.0.1131.138~18.04.1
                                   Available with Ubuntu Pro
   linux-image-gcp                 5.4.0.1130.139~18.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-hwe-18.04   5.4.0.186.206~18.04.1
                                   Available with Ubuntu Pro
   linux-image-ibm                 5.4.0.1073.78~18.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-hwe-18.04  5.4.0.186.206~18.04.1
                                   Available with Ubuntu Pro
   linux-image-oem                 5.4.0.186.206~18.04.1
                                   Available with Ubuntu Pro
   linux-image-oem-osp1            5.4.0.186.206~18.04.1
                                   Available with Ubuntu Pro
   linux-image-oracle              5.4.0.1125.134~18.04.1
                                   Available with Ubuntu Pro
   linux-image-raspi-hwe-18.04     5.4.0.1110.122~18.04.1
                                   Available with Ubuntu Pro
   linux-image-snapdragon-hwe-18.04  5.4.0.186.206~18.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-hwe-18.04   5.4.0.186.206~18.04.1
                                   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-6831-1
   CVE-2021-47063, CVE-2021-47070, CVE-2023-52504, CVE-2024-0841,
   CVE-2024-26688, CVE-2024-26712, CVE-2024-26733, CVE-2024-26735,
   CVE-2024-26736, CVE-2024-26748, CVE-2024-26749, CVE-2024-26751,
   CVE-2024-26752, CVE-2024-26754, CVE-2024-26763, CVE-2024-26764,
   CVE-2024-26766, CVE-2024-26772, CVE-2024-26773, CVE-2024-26777,
   CVE-2024-26778, CVE-2024-26779, CVE-2024-26788, CVE-2024-26790,
   CVE-2024-26791, CVE-2024-26793, CVE-2024-26801, CVE-2024-26804,
   CVE-2024-26805, CVE-2024-26835, CVE-2024-26839, CVE-2024-26840,
   CVE-2024-26845, CVE-2024-26848, CVE-2024-27405, CVE-2024-27410,
   CVE-2024-27412, CVE-2024-27413, CVE-2024-27414, CVE-2024-27416,
   CVE-2024-27417, CVE-2024-35811

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.4.0-186.206
   https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1126.136
   https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1131.138
   https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1130.139
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1093.97
   https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1073.78
   https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1114.121
   https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1125.134
   https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1110.122
   https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1045.49