1. Ubuntu Security Notices
  2. USN-7521-1

USN-7521-1: Linux kernel vulnerabilities

Publication date

20 May 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

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;
  • Serial ATA and Parallel ATA drivers;
  • Drivers core;
  • Network block device driver;
  • Bluetooth drivers;
  • Character device driver;
  • TPM device driver;
  • Clock framework and drivers;
  • Hardware crypto device drivers;
  • FireWire subsystem;
  • EFI core;
  • Qualcomm firmware drivers;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • I2C subsystem;
  • I3C subsystem;
  • InfiniBand drivers;
  • Input Device (Mouse) drivers;
  • IOMMU subsystem;
  • Multiple devices driver;
  • Media drivers;
  • NVIDIA Tegra memory controller...

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;
  • Serial ATA and Parallel ATA drivers;
  • Drivers core;
  • Network block device driver;
  • Bluetooth drivers;
  • Character device driver;
  • TPM device driver;
  • Clock framework and drivers;
  • Hardware crypto device drivers;
  • FireWire subsystem;
  • EFI core;
  • Qualcomm firmware drivers;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • I2C subsystem;
  • I3C subsystem;
  • InfiniBand drivers;
  • Input Device (Mouse) drivers;
  • IOMMU subsystem;
  • Multiple devices driver;
  • Media drivers;
  • NVIDIA Tegra memory controller driver;
  • Fastrpc Driver;
  • Network drivers;
  • Operating Performance Points (OPP) driver;
  • PCI subsystem;
  • x86 platform drivers;
  • PPS (Pulse Per Second) driver;
  • PTP clock framework;
  • Remote Processor subsystem;
  • Real Time Clock drivers;
  • S/390 drivers;
  • SCSI subsystem;
  • QCOM SoC drivers;
  • SPI subsystem;
  • Media staging drivers;
  • Trusted Execution Environment drivers;
  • TTY drivers;
  • UFS subsystem;
  • USB Device Class drivers;
  • USB core drivers;
  • USB Gadget drivers;
  • USB Host Controller drivers;
  • Framebuffer layer;
  • File systems infrastructure;
  • BTRFS file system;
  • Ceph distributed file system;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • Overlay file system;
  • SMB network file system;
  • UBI file system;
  • BPF subsystem;
  • Timer subsystem;
  • KVM subsystem;
  • Networking core;
  • ptr_ring data structure definitions;
  • Networking subsytem;
  • Amateur Radio drivers;
  • L3 Master device support module;
  • TCP network protocol;
  • XFRM subsystem;
  • Tracing infrastructure;
  • io_uring subsystem;
  • Process Accounting mechanism;
  • Perf events;
  • Padata parallel execution mechanism;
  • printk logging mechanism;
  • Scheduler infrastructure;
  • Workqueue subsystem;
  • Memory management;
  • B.A.T.M.A.N. meshing protocol;
  • Bluetooth subsystem;
  • IPv4 networking;
  • IPv6 networking;
  • MAC80211 subsystem;
  • Multipath TCP;
  • Netfilter;
  • NFC subsystem;
  • Open vSwitch;
  • Rose network layer;
  • RxRPC session sockets;
  • Network traffic control;
  • Wireless networking;
  • Key management;
  • Landlock security;
  • Linux Security Modules (LSM) Framework;
  • Tomoyo security module;
  • SoC audio core drivers;
  • SOF drivers

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
24.10 oracular linux-image-6.11.0-1010-realtime –  6.11.0-1010.10
linux-image-6.11.0-1013-raspi –  6.11.0-1013.13
linux-image-6.11.0-1015-azure –  6.11.0-1015.15
linux-image-6.11.0-1015-azure-fde –  6.11.0-1015.15
linux-image-6.11.0-1015-gcp –  6.11.0-1015.15
linux-image-6.11.0-1015-gcp-64k –  6.11.0-1015.15
linux-image-6.11.0-26-generic –  6.11.0-26.26
linux-image-6.11.0-26-generic-64k –  6.11.0-26.26
linux-image-azure –  6.11.0-1015.15
linux-image-azure-fde –  6.11.0-1015.15
linux-image-gcp –  6.11.0-1015.15
linux-image-gcp-64k –  6.11.0-1015.15
linux-image-generic –  6.11.0-26.26
linux-image-generic-64k –  6.11.0-26.26
linux-image-raspi –  6.11.0-1013.13
linux-image-realtime –  6.11.0-1010.10
linux-image-virtual –  6.11.0-26.26
24.04 noble linux-image-6.11.0-1015-azure –  6.11.0-1015.15~24.04.1
linux-image-6.11.0-1015-azure-fde –  6.11.0-1015.15~24.04.1
linux-image-6.11.0-1015-gcp –  6.11.0-1015.15~24.04.1
linux-image-6.11.0-1015-gcp-64k –  6.11.0-1015.15~24.04.1
linux-image-6.11.0-1022-oem –  6.11.0-1022.22
linux-image-6.11.0-26-generic –  6.11.0-26.26~24.04.1
linux-image-6.11.0-26-generic-64k –  6.11.0-26.26~24.04.1
linux-image-azure –  6.11.0-1015.15~24.04.1
linux-image-azure-fde –  6.11.0-1015.15~24.04.1
linux-image-gcp –  6.11.0-1015.15~24.04.1
linux-image-gcp-64k –  6.11.0-1015.15~24.04.1
linux-image-generic-64k-hwe-24.04 –  6.11.0-26.26~24.04.1
linux-image-generic-hwe-24.04 –  6.11.0-26.26~24.04.1
linux-image-oem-24.04b –  6.11.0-1022.22
linux-image-virtual-hwe-24.04 –  6.11.0-26.26~24.04.1

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References

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