1. Ubuntu Security Notices
  2. USN-7769-1

USN-7769-1: Linux kernel vulnerabilities

Publication date

25 September 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-6.14 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-realtime - Linux kernel for Real-time 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;
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ACPI drivers;
  • Android drivers;
  • Bluetooth drivers;
  • Bus devices;
  • Clock framework and drivers;
  • CPU frequency scaling framework;
  • Hardware crypto device drivers;
  • DMA engine subsystem;
  • EDAC drivers;
  • Arm Firmware Framework for ARMv8-A(FFA);
  • FPGA Framework;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • Hardware monitoring drivers;
  • HW tracing;
  • InfiniBand drivers;
  • IOMMU subsystem;
  • Multiple devices driver;
  • Media drivers;
  • VMware VMCI Driver;
  • MTD block device...

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;
  • Block layer subsystem;
  • Cryptographic API;
  • ACPI drivers;
  • Android drivers;
  • Bluetooth drivers;
  • Bus devices;
  • Clock framework and drivers;
  • CPU frequency scaling framework;
  • Hardware crypto device drivers;
  • DMA engine subsystem;
  • EDAC drivers;
  • Arm Firmware Framework for ARMv8-A(FFA);
  • FPGA Framework;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • Hardware monitoring drivers;
  • HW tracing;
  • InfiniBand drivers;
  • IOMMU subsystem;
  • Multiple devices driver;
  • Media drivers;
  • VMware VMCI Driver;
  • MTD block device drivers;
  • Network drivers;
  • Mellanox network drivers;
  • STMicroelectronics network drivers;
  • NVDIMM (Non-Volatile Memory Device) drivers;
  • NVME drivers;
  • NVMEM (Non Volatile Memory) drivers;
  • PCI subsystem;
  • Amlogic Meson DDR PMU;
  • NI-700 PMU driver;
  • PHY drivers;
  • Pin controllers subsystem;
  • x86 platform drivers;
  • PTP clock framework;
  • SCSI subsystem;
  • ASPEED SoC drivers;
  • SPI subsystem;
  • TCM subsystem;
  • Thunderbolt and USB4 drivers;
  • TTY drivers;
  • UFS subsystem;
  • USB core drivers;
  • USB Gadget drivers;
  • Renesas USBHS Controller drivers;
  • USB Type-C Port Controller Manager driver;
  • VFIO drivers;
  • Virtio Host (VHOST) subsystem;
  • Backlight driver;
  • Framebuffer layer;
  • Virtio drivers;
  • BTRFS file system;
  • EROFS file system;
  • F2FS file system;
  • File systems infrastructure;
  • Network file systems library;
  • NTFS3 file system;
  • SMB network file system;
  • Codetag library;
  • BPF subsystem;
  • LZO compression library;
  • Mellanox drivers;
  • IPv4 networking;
  • Bluetooth subsystem;
  • Network sockets;
  • XFRM subsystem;
  • Digital Audio (PCM) driver;
  • Tracing infrastructure;
  • io_uring subsystem;
  • Padata parallel execution mechanism;
  • DVFS energy model driver;
  • Restartable seuqences system call mechanism;
  • Timer subsystem;
  • Memory management;
  • KASAN memory debugging framework;
  • CAN network layer;
  • Networking core;
  • IPv6 networking;
  • Netfilter;
  • NetLabel subsystem;
  • Open vSwitch;
  • Network traffic control;
  • TIPC protocol;
  • TLS protocol;
  • ALSA framework;
  • sma1307 audio codecs;
  • Intel ASoC drivers;
  • MediaTek ASoC 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
25.04 plucky linux-image-6.14.0-1012-realtime –  6.14.0-1012.12  
linux-image-6.14.0-1013-aws –  6.14.0-1013.13
linux-image-6.14.0-1013-aws-64k –  6.14.0-1013.13
linux-image-6.14.0-1013-oracle –  6.14.0-1013.13
linux-image-6.14.0-1013-oracle-64k –  6.14.0-1013.13
linux-image-6.14.0-1016-gcp –  6.14.0-1016.17
linux-image-6.14.0-1016-gcp-64k –  6.14.0-1016.17
linux-image-6.14.0-32-generic –  6.14.0-32.32
linux-image-6.14.0-32-generic-64k –  6.14.0-32.32
linux-image-aws –  6.14.0-1013.13
linux-image-aws-6.14 –  6.14.0-1013.13
linux-image-aws-64k –  6.14.0-1013.13
linux-image-aws-64k-6.14 –  6.14.0-1013.13
linux-image-gcp –  6.14.0-1016.17
linux-image-gcp-6.14 –  6.14.0-1016.17
linux-image-gcp-64k –  6.14.0-1016.17
linux-image-gcp-64k-6.14 –  6.14.0-1016.17
linux-image-generic –  6.14.0-32.32
linux-image-generic-6.14 –  6.14.0-32.32
linux-image-generic-64k –  6.14.0-32.32
linux-image-generic-64k-6.14 –  6.14.0-32.32
linux-image-oracle –  6.14.0-1013.13
linux-image-oracle-6.14 –  6.14.0-1013.13
linux-image-oracle-64k –  6.14.0-1013.13
linux-image-oracle-64k-6.14 –  6.14.0-1013.13
linux-image-realtime –  6.14.0-1012.12  
linux-image-realtime-6.14 –  6.14.0-1012.12  
linux-image-virtual –  6.14.0-32.32
linux-image-virtual-6.14 –  6.14.0-32.32
24.04 noble linux-image-6.14.0-1016-gcp –  6.14.0-1016.17~24.04.1
linux-image-6.14.0-1016-gcp-64k –  6.14.0-1016.17~24.04.1
linux-image-gcp –  6.14.0-1016.17~24.04.1
linux-image-gcp-6.14 –  6.14.0-1016.17~24.04.1
linux-image-gcp-64k –  6.14.0-1016.17~24.04.1
linux-image-gcp-64k-6.14 –  6.14.0-1016.17~24.04.1

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References

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