==========================================================================
Ubuntu Security Notice USN-7516-1
May 16, 2025

linux, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-oracle
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-oracle: Linux kernel for Oracle Cloud systems
- linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) 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:
  - ARM64 architecture;
  - PowerPC architecture;
  - Block layer subsystem;
  - Drivers core;
  - Network block device driver;
  - Character device driver;
  - GPU drivers;
  - HID subsystem;
  - InfiniBand drivers;
  - Media drivers;
  - Network drivers;
  - PPS (Pulse Per Second) driver;
  - PTP clock framework;
  - RapidIO drivers;
  - Real Time Clock drivers;
  - SCSI subsystem;
  - SLIMbus drivers;
  - QCOM SoC drivers;
  - Trusted Execution Environment drivers;
  - USB DSL drivers;
  - USB Device Class drivers;
  - USB core drivers;
  - USB Gadget drivers;
  - USB Host Controller drivers;
  - Renesas USBHS Controller drivers;
  - File systems infrastructure;
  - BTRFS file system;
  - NILFS2 file system;
  - UBI file system;
  - KVM subsystem;
  - L3 Master device support module;
  - Process Accounting mechanism;
  - printk logging mechanism;
  - Scheduler infrastructure;
  - Tracing infrastructure;
  - Memory management;
  - 802.1Q VLAN protocol;
  - B.A.T.M.A.N. meshing protocol;
  - Bluetooth subsystem;
  - Networking core;
  - IPv4 networking;
  - IPv6 networking;
  - Logical Link layer;
  - NFC subsystem;
  - Open vSwitch;
  - Rose network layer;
  - Network traffic control;
  - Wireless networking;
  - Tomoyo security module;
(CVE-2025-21866, CVE-2025-21846, CVE-2025-21971, CVE-2025-21909,
CVE-2024-58083, CVE-2025-21811, CVE-2025-21776, CVE-2024-58051,
CVE-2025-21917, CVE-2025-21935, CVE-2025-21785, CVE-2021-47191,
CVE-2025-21765, CVE-2025-21704, CVE-2025-21647, CVE-2024-58069,
CVE-2025-21877, CVE-2025-21948, CVE-2024-58007, CVE-2024-58001,
CVE-2025-21871, CVE-2024-58055, CVE-2025-21848, CVE-2025-21925,
CVE-2024-58058, CVE-2025-21814, CVE-2025-21905, CVE-2025-21898,
CVE-2025-21926, CVE-2025-21760, CVE-2024-57973, CVE-2025-21806,
CVE-2024-58071, CVE-2025-21761, CVE-2025-21762, CVE-2024-57986,
CVE-2025-21708, CVE-2025-21744, CVE-2024-26996, CVE-2024-50055,
CVE-2024-58020, CVE-2025-21858, CVE-2025-21715, CVE-2025-21904,
CVE-2025-21920, CVE-2024-56599, CVE-2025-21781, CVE-2025-21764,
CVE-2025-21865, CVE-2025-21772, CVE-2024-58072, CVE-2025-21928,
CVE-2025-21859, CVE-2025-21721, CVE-2025-21719, CVE-2025-21914,
CVE-2025-21753, CVE-2024-58009, CVE-2024-57981, CVE-2024-58063,
CVE-2024-58052, CVE-2025-21722, CVE-2024-57977, CVE-2025-21736,
CVE-2025-21922, CVE-2024-26982, CVE-2025-21718, CVE-2025-21916,
CVE-2025-21749, CVE-2025-21787, CVE-2024-58085, CVE-2024-58010,
CVE-2024-57979, CVE-2024-57980, CVE-2025-21782, CVE-2025-21791,
CVE-2025-21728, CVE-2023-52741, CVE-2025-21934, CVE-2024-58002,
CVE-2025-21735, CVE-2025-21910, CVE-2025-21823, CVE-2024-58090,
CVE-2025-21862, CVE-2025-21731, CVE-2025-21835, CVE-2024-58017,
CVE-2024-58014, CVE-2025-21763)

Update instructions:

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

Ubuntu 20.04 LTS
  linux-image-5.4.0-1144-oracle   5.4.0-1144.154
  linux-image-5.4.0-1149-gcp      5.4.0-1149.158
  linux-image-5.4.0-216-generic   5.4.0-216.236
  linux-image-5.4.0-216-generic-lpae  5.4.0-216.236
  linux-image-5.4.0-216-lowlatency  5.4.0-216.236
  linux-image-gcp-lts-20.04       5.4.0.1149.151
  linux-image-generic             5.4.0.216.208
  linux-image-generic-lpae        5.4.0.216.208
  linux-image-lowlatency          5.4.0.216.208
  linux-image-oem                 5.4.0.216.208
  linux-image-oem-osp1            5.4.0.216.208
  linux-image-oracle-lts-20.04    5.4.0.1144.138
  linux-image-virtual             5.4.0.216.208

Ubuntu 18.04 LTS
  linux-image-5.4.0-1149-gcp      5.4.0-1149.158~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-1151-azure    5.4.0-1151.158~18.04.1
                                  Available with Ubuntu Pro
  linux-image-azure               5.4.0.1151.158~18.04.1
                                  Available with Ubuntu Pro
  linux-image-gcp                 5.4.0.1149.158~18.04.1
                                  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-7516-1
  CVE-2021-47191, CVE-2023-52741, CVE-2024-26982, CVE-2024-26996,
  CVE-2024-50055, CVE-2024-56599, CVE-2024-57973, CVE-2024-57977,
  CVE-2024-57979, CVE-2024-57980, CVE-2024-57981, CVE-2024-57986,
  CVE-2024-58001, CVE-2024-58002, CVE-2024-58007, CVE-2024-58009,
  CVE-2024-58010, CVE-2024-58014, CVE-2024-58017, CVE-2024-58020,
  CVE-2024-58051, CVE-2024-58052, CVE-2024-58055, CVE-2024-58058,
  CVE-2024-58063, CVE-2024-58069, CVE-2024-58071, CVE-2024-58072,
  CVE-2024-58083, CVE-2024-58085, CVE-2024-58090, CVE-2025-21647,
  CVE-2025-21704, CVE-2025-21708, CVE-2025-21715, CVE-2025-21718,
  CVE-2025-21719, CVE-2025-21721, CVE-2025-21722, CVE-2025-21728,
  CVE-2025-21731, CVE-2025-21735, CVE-2025-21736, CVE-2025-21744,
  CVE-2025-21749, CVE-2025-21753, CVE-2025-21760, CVE-2025-21761,
  CVE-2025-21762, CVE-2025-21763, CVE-2025-21764, CVE-2025-21765,
  CVE-2025-21772, CVE-2025-21776, CVE-2025-21781, CVE-2025-21782,
  CVE-2025-21785, CVE-2025-21787, CVE-2025-21791, CVE-2025-21806,
  CVE-2025-21811, CVE-2025-21814, CVE-2025-21823, CVE-2025-21835,
  CVE-2025-21846, CVE-2025-21848, CVE-2025-21858, CVE-2025-21859,
  CVE-2025-21862, CVE-2025-21865, CVE-2025-21866, CVE-2025-21871,
  CVE-2025-21877, CVE-2025-21898, CVE-2025-21904, CVE-2025-21905,
  CVE-2025-21909, CVE-2025-21910, CVE-2025-21914, CVE-2025-21916,
  CVE-2025-21917, CVE-2025-21920, CVE-2025-21922, CVE-2025-21925,
  CVE-2025-21926, CVE-2025-21928, CVE-2025-21934, CVE-2025-21935,
  CVE-2025-21948, CVE-2025-21971

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.4.0-216.236
  https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1149.158
  https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1144.154