1. Ubuntu Security Notices
  2. USN-7516-1

USN-7516-1: Linux kernel vulnerabilities

Publication date

16 May 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel
  • linux-azure-5.4 - Linux kernel for Microsoft Azure cloud systems
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-oracle - Linux kernel for Oracle 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:

  • 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...

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

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
20.04 focal 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
18.04 bionic linux-image-5.4.0-1149-gcp –  5.4.0-1149.158~18.04.1  
linux-image-5.4.0-1151-azure –  5.4.0-1151.158~18.04.1  
linux-image-azure –  5.4.0.1151.158~18.04.1  
linux-image-gcp –  5.4.0.1149.158~18.04.1  

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References

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