1. Ubuntu Security Notices
  2. USN-7909-3

USN-7909-3: Linux kernel (FIPS) vulnerabilities

Publication date

4 December 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:

  • ARM32 architecture;
  • ARM64 architecture;
  • MIPS architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • S390 architecture;
  • x86 architecture;
  • Block layer subsystem;
  • ACPI drivers;
  • ATM drivers;
  • DRBD Distributed Replicated Block Device drivers;
  • Bus devices;
  • Clock framework and drivers;
  • Data acquisition framework and drivers;
  • Hardware crypto device drivers;
  • Device frequency scaling framework;
  • Buffer Sharing and Synchronization framework;
  • DMA engine subsystem;
  • ARM SCMI message protocol;
  • GPU drivers;
  • HID subsystem;
  • Hardware monitoring drivers;
  • I2C subsystem;
  • I3C subsystem;
  • IIO...

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;
  • MIPS architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • S390 architecture;
  • x86 architecture;
  • Block layer subsystem;
  • ACPI drivers;
  • ATM drivers;
  • DRBD Distributed Replicated Block Device drivers;
  • Bus devices;
  • Clock framework and drivers;
  • Data acquisition framework and drivers;
  • Hardware crypto device drivers;
  • Device frequency scaling framework;
  • Buffer Sharing and Synchronization framework;
  • DMA engine subsystem;
  • ARM SCMI message protocol;
  • GPU drivers;
  • HID subsystem;
  • Hardware monitoring drivers;
  • I2C subsystem;
  • I3C subsystem;
  • IIO subsystem;
  • InfiniBand drivers;
  • Input Device core drivers;
  • IOMMU subsystem;
  • Media drivers;
  • Network drivers;
  • Mellanox network drivers;
  • PCI subsystem;
  • PCCARD (PCMCIA/CardBus) bus subsystem;
  • PHY drivers;
  • Power supply drivers;
  • Voltage and Current Regulator drivers;
  • SCSI subsystem;
  • ASPEED SoC drivers;
  • QCOM SoC drivers;
  • small TFT LCD display modules;
  • Trusted Execution Environment drivers;
  • TTY drivers;
  • UFS subsystem;
  • USB core drivers;
  • DesignWare USB3 driver;
  • USB Gadget drivers;
  • Framebuffer layer;
  • BTRFS file system;
  • File systems infrastructure;
  • EFI Variable file system;
  • Ext4 file system;
  • F2FS file system;
  • JFS file system;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • NTFS3 file system;
  • SMB network file system;
  • Asynchronous Transfer Mode (ATM) subsystem;
  • BPF subsystem;
  • NFS page cache wrapper;
  • Memory management;
  • Networking subsytem;
  • UDP network protocol;
  • Perf events;
  • RCU subsystem;
  • Tracing infrastructure;
  • 802.1Q VLAN protocol;
  • Appletalk network protocol;
  • Amateur Radio drivers;
  • B.A.T.M.A.N. meshing protocol;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • Networking core;
  • HSR network protocol;
  • IPv4 networking;
  • IPv6 networking;
  • Multipath TCP;
  • Netfilter;
  • Network traffic control;
  • SCTP protocol;
  • TLS protocol;
  • Wireless networking;
  • SoC audio core drivers;
  • 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 LTS jammy linux-image-5.15.0-1097-aws-fips –  5.15.0-1097.104+fips1  
linux-image-5.15.0-1097-gcp-fips –  5.15.0-1097.106+fips1  
linux-image-5.15.0-163-fips –  5.15.0-163.173+fips1  
linux-image-aws-fips –  5.15.0.1097.93  
linux-image-aws-fips-5.15 –  5.15.0.1097.93  
linux-image-fips –  5.15.0.163.94  
linux-image-fips-5.15 –  5.15.0.163.94  
linux-image-gcp-fips –  5.15.0.1097.87  
linux-image-gcp-fips-5.15 –  5.15.0.1097.87  

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References

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