1. Ubuntu Security Notices
  2. USN-7774-2

USN-7774-2: Linux kernel (FIPS) vulnerabilities

Publication date

25 September 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-aws-fips - Linux kernel for Amazon Web Services (AWS) systems with FIPS
  • linux-fips - Linux kernel with FIPS
  • linux-gcp-fips - Linux kernel for Google Cloud Platform (GCP) systems with FIPS

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;
  • x86 architecture;
  • ACPI drivers;
  • Serial ATA and Parallel ATA drivers;
  • Drivers core;
  • ATA over ethernet (AOE) driver;
  • Network block device driver;
  • Bus devices;
  • Clock framework and drivers;
  • Hardware crypto device drivers;
  • DMA engine subsystem;
  • EDAC drivers;
  • GPU drivers;
  • HID subsystem;
  • InfiniBand drivers;
  • Input Device (Miscellaneous) drivers;
  • Multiple devices driver;
  • Media drivers;
  • VMware VMCI Driver;
  • MMC subsystem;
  • MTD block device drivers;
  • Network drivers;
  • Pin controllers subsystem;
  • x86 platform drivers;
  • PTP clock...

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;
  • x86 architecture;
  • ACPI drivers;
  • Serial ATA and Parallel ATA drivers;
  • Drivers core;
  • ATA over ethernet (AOE) driver;
  • Network block device driver;
  • Bus devices;
  • Clock framework and drivers;
  • Hardware crypto device drivers;
  • DMA engine subsystem;
  • EDAC drivers;
  • GPU drivers;
  • HID subsystem;
  • InfiniBand drivers;
  • Input Device (Miscellaneous) drivers;
  • Multiple devices driver;
  • Media drivers;
  • VMware VMCI Driver;
  • MMC subsystem;
  • MTD block device drivers;
  • Network drivers;
  • Pin controllers subsystem;
  • x86 platform drivers;
  • PTP clock framework;
  • RapidIO drivers;
  • Voltage and Current Regulator drivers;
  • Remote Processor subsystem;
  • S/390 drivers;
  • SCSI subsystem;
  • ASPEED SoC drivers;
  • TCM subsystem;
  • Thermal drivers;
  • Thunderbolt and USB4 drivers;
  • TTY drivers;
  • UFS subsystem;
  • USB Gadget drivers;
  • Renesas USBHS Controller drivers;
  • USB Type-C support driver;
  • Virtio Host (VHOST) subsystem;
  • Backlight driver;
  • Framebuffer layer;
  • BTRFS file system;
  • File systems infrastructure;
  • Ext4 file system;
  • F2FS file system;
  • JFFS2 file system;
  • JFS file system;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NTFS3 file system;
  • DRM display driver;
  • Memory Management;
  • Mellanox drivers;
  • Memory management;
  • Netfilter;
  • Network sockets;
  • IPC subsystem;
  • BPF subsystem;
  • Perf events;
  • Kernel exit() syscall;
  • Restartable seuqences system call mechanism;
  • Timer subsystem;
  • Tracing infrastructure;
  • Appletalk network protocol;
  • Asynchronous Transfer Mode (ATM) subsystem;
  • Networking core;
  • IPv6 networking;
  • MultiProtocol Label Switching driver;
  • NetLabel subsystem;
  • Netlink;
  • NFC subsystem;
  • Open vSwitch;
  • Rose network layer;
  • RxRPC session sockets;
  • Network traffic control;
  • TIPC protocol;
  • VMware vSockets driver;
  • USB sound devices

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
22.04 jammy linux-image-5.15.0-1092-aws-fips –  5.15.0-1092.99+fips1  
linux-image-5.15.0-1092-gcp-fips –  5.15.0-1092.101+fips1  
linux-image-5.15.0-156-fips –  5.15.0-156.166+fips1  
linux-image-aws-fips –  5.15.0.1092.88  
linux-image-aws-fips-5.15 –  5.15.0.1092.88  
linux-image-fips –  5.15.0.156.89  
linux-image-fips-5.15 –  5.15.0.156.89  
linux-image-gcp-fips –  5.15.0.1092.82  
linux-image-gcp-fips-5.15 –  5.15.0.1092.82  

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References

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