1. Ubuntu Security Notices
  2. USN-7513-2

USN-7513-2: Linux kernel (Real-time) vulnerabilities

Publication date

16 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:

  • RISC-V architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Compute Acceleration Framework;
  • ACPI drivers;
  • Drivers core;
  • Ublk userspace block driver;
  • Virtio block driver;
  • DMA engine subsystem;
  • GPU drivers;
  • Microsoft Hyper-V drivers;
  • Hardware monitoring drivers;
  • IIO ADC drivers;
  • IIO subsystem;
  • InfiniBand drivers;
  • Multiple devices driver;
  • Media drivers;
  • Microchip PCI driver;
  • Network drivers;
  • Mellanox network drivers;
  • STMicroelectronics network drivers;
  • PCI subsystem;
  • Pin controllers subsystem;
  • x86 platform drivers;
  • Power supply drivers;
  • SCSI...

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:

  • RISC-V architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Compute Acceleration Framework;
  • ACPI drivers;
  • Drivers core;
  • Ublk userspace block driver;
  • Virtio block driver;
  • DMA engine subsystem;
  • GPU drivers;
  • Microsoft Hyper-V drivers;
  • Hardware monitoring drivers;
  • IIO ADC drivers;
  • IIO subsystem;
  • InfiniBand drivers;
  • Multiple devices driver;
  • Media drivers;
  • Microchip PCI driver;
  • Network drivers;
  • Mellanox network drivers;
  • STMicroelectronics network drivers;
  • PCI subsystem;
  • Pin controllers subsystem;
  • x86 platform drivers;
  • Power supply drivers;
  • SCSI subsystem;
  • USB Gadget drivers;
  • TDX Guest driver;
  • AFS file system;
  • BTRFS file system;
  • Ceph distributed file system;
  • EROFS file system;
  • File systems infrastructure;
  • Network file systems library;
  • NILFS2 file system;
  • Overlay file system;
  • SMB network file system;
  • VLANs driver;
  • Memory management;
  • LAPB network protocol;
  • io_uring subsystem;
  • BPF subsystem;
  • Control group (cgroup);
  • Tracing infrastructure;
  • Workqueue subsystem;
  • Bluetooth subsystem;
  • Networking core;
  • IPv4 networking;
  • IPv6 networking;
  • MAC80211 subsystem;
  • Multipath TCP;
  • Netfilter;
  • NET/ROM layer;
  • Packet sockets;
  • RDS protocol;
  • Network traffic control;
  • SCTP protocol;
  • SMC sockets;
  • Wireless networking;
  • SELinux security module;
  • ALSA framework;
  • 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
24.04 noble linux-image-6.8.1-1022-realtime –  6.8.1-1022.23  
linux-image-realtime –  6.8.1-1022.23  

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References

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