==========================================================================
Ubuntu Security Notice USN-7159-1
December 12, 2024

linux, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4,
linux-kvm, linux-raspi, 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-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-raspi: Linux kernel for Raspberry Pi systems
- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors
- 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

Details:

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;
  - ARM64 architecture;
  - S390 architecture;
  - x86 architecture;
  - Power management core;
  - GPU drivers;
  - InfiniBand drivers;
  - Network drivers;
  - S/390 drivers;
  - TTY drivers;
  - BTRFS file system;
  - EROFS file system;
  - F2FS file system;
  - File systems infrastructure;
  - BPF subsystem;
  - Socket messages infrastructure;
  - Bluetooth subsystem;
  - Ethernet bridge;
  - Networking core;
  - IPv4 networking;
  - SELinux security module;
(CVE-2022-48938, CVE-2024-42156, CVE-2024-36953, CVE-2024-38538,
CVE-2021-47501, CVE-2024-42068, CVE-2024-26947, CVE-2024-46724,
CVE-2024-36968, CVE-2023-52497, CVE-2024-35951, CVE-2023-52488,
CVE-2024-44940, CVE-2022-48733, CVE-2023-52498, CVE-2022-48943,
CVE-2024-35904, CVE-2024-42077, CVE-2024-36938, CVE-2023-52639,
CVE-2024-42240, CVE-2024-44942, CVE-2021-47076)

Update instructions:

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

Ubuntu 20.04 LTS
  linux-image-5.4.0-1055-xilinx-zynqmp  5.4.0-1055.59
  linux-image-5.4.0-1083-ibm      5.4.0-1083.88
  linux-image-5.4.0-1120-raspi    5.4.0-1120.132
  linux-image-5.4.0-1124-kvm      5.4.0-1124.132
  linux-image-5.4.0-1140-gcp      5.4.0-1140.149
  linux-image-5.4.0-202-generic   5.4.0-202.222
  linux-image-5.4.0-202-generic-lpae  5.4.0-202.222
  linux-image-5.4.0-202-lowlatency  5.4.0-202.222
  linux-image-gcp-lts-20.04       5.4.0.1140.142
  linux-image-generic             5.4.0.202.198
  linux-image-generic-lpae        5.4.0.202.198
  linux-image-ibm-lts-20.04       5.4.0.1083.112
  linux-image-kvm                 5.4.0.1124.120
  linux-image-lowlatency          5.4.0.202.198
  linux-image-oem                 5.4.0.202.198
  linux-image-oem-osp1            5.4.0.202.198
  linux-image-raspi               5.4.0.1120.150
  linux-image-raspi2              5.4.0.1120.150
  linux-image-virtual             5.4.0.202.198
  linux-image-xilinx-zynqmp       5.4.0.1055.55

Ubuntu 18.04 LTS
  linux-image-5.4.0-1083-ibm      5.4.0-1083.88~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-1140-gcp      5.4.0-1140.149~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-202-generic   5.4.0-202.222~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-202-lowlatency  5.4.0-202.222~18.04.1
                                  Available with Ubuntu Pro
  linux-image-gcp                 5.4.0.1140.149~18.04.1
                                  Available with Ubuntu Pro
  linux-image-generic-hwe-18.04   5.4.0.202.222~18.04.1
                                  Available with Ubuntu Pro
  linux-image-ibm                 5.4.0.1083.88~18.04.1
                                  Available with Ubuntu Pro
  linux-image-lowlatency-hwe-18.04  5.4.0.202.222~18.04.1
                                  Available with Ubuntu Pro
  linux-image-oem                 5.4.0.202.222~18.04.1
                                  Available with Ubuntu Pro
  linux-image-oem-osp1            5.4.0.202.222~18.04.1
                                  Available with Ubuntu Pro
  linux-image-snapdragon-hwe-18.04  5.4.0.202.222~18.04.1
                                  Available with Ubuntu Pro
  linux-image-virtual-hwe-18.04   5.4.0.202.222~18.04.1
                                  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-7159-1
  CVE-2021-47076, CVE-2021-47501, CVE-2022-48733, CVE-2022-48938,
  CVE-2022-48943, CVE-2023-52488, CVE-2023-52497, CVE-2023-52498,
  CVE-2023-52639, CVE-2024-26947, CVE-2024-35904, CVE-2024-35951,
  CVE-2024-36938, CVE-2024-36953, CVE-2024-36968, CVE-2024-38538,
  CVE-2024-42068, CVE-2024-42077, CVE-2024-42156, CVE-2024-42240,
  CVE-2024-44940, CVE-2024-44942, CVE-2024-46724

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.4.0-202.222
  https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1140.149
  https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1083.88
  https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1124.132
  https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1120.132
  https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1055.59

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