USN-7703-1: Linux kernel vulnerabilities

USN-7703-1: Linux kernel vulnerabilities
Publication date: 19 August 2025
Overview: Several security issues were fixed in the Linux kernel.
Releases: 25.04 ,24.04 LTS

Packages

• linux - Linux kernel
• linux-aws - Linux kernel for Amazon Web Services (AWS) systems
• linux-lowlatency - Linux low latency kernel
• linux-lowlatency-hwe-6.8 - Linux low latency kernel
• 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;
• GPIO subsystem;
• GPU drivers;
• HID subsystem;
• Input Device (Mouse) drivers;
• Multiple devices driver;
• Media drivers;
• Network drivers;
• PCI subsystem;
• S/390 drivers;
• SPI subsystem;
• Trusted Execution Environment drivers;
• UFS subsystem;
• USB Device Class drivers;
• USB core drivers;
• USB Gadget drivers;
• Framebuffer layer;
• Network file system (NFS) client;
• Network file system (NFS) server daemon;
• File systems infrastructure;
• SMB network file system;
• Networking core;
• L3 Master device support module;
• TCP network protocol;
• io_uring subsystem;
• Process Accounting mechanism;
• BPF subsystem;
• Timer subsystem;
• Workqueue subsystem;
• Memory management;
• Amateur Radio drivers;
• B.A.T.M.A.N. meshing protocol;
• IPv4 networking;
• IPv6 networking;
• Multipath TCP;
• Open vSwitch;
• Network traffic control;
• SOF drivers

Update instructions
The problem can be corrected by updating your system to the following package versions:

24.04 noble

• linux-image-6.8.0-1035-aws – 6.8.0-1035.37
• linux-image-6.8.0-1035-aws-64k – 6.8.0-1035.37
• linux-image-6.8.0-78-generic – 6.8.0-78.78
• linux-image-6.8.0-78-generic-64k – 6.8.0-78.78
• linux-image-6.8.0-78-lowlatency – 6.8.0-78.78.1
• linux-image-6.8.0-78-lowlatency-64k – 6.8.0-78.78.1
• linux-image-6.8.1-1030-realtime – 6.8.1-1030.31
• linux-image-aws-6.8 – 6.8.0-1035.37
• linux-image-aws-64k-6.8 – 6.8.0-1035.37
• linux-image-aws-64k-lts-24.04 – 6.8.0-1035.37
• linux-image-aws-lts-24.04 – 6.8.0-1035.37
• linux-image-generic – 6.8.0-78.78
• linux-image-generic-6.8 – 6.8.0-78.78
• linux-image-generic-64k – 6.8.0-78.78
• linux-image-generic-64k-6.8 – 6.8.0-78.78
• linux-image-generic-lpae – 6.8.0-78.78
• linux-image-kvm – 6.8.0-78.78
• linux-image-lowlatency – 6.8.0-78.78.1
• linux-image-lowlatency-6.8 – 6.8.0-78.78.1
• linux-image-lowlatency-64k – 6.8.0-78.78.1
• linux-image-lowlatency-64k-6.8 – 6.8.0-78.78.1
• linux-image-realtime – 6.8.1-1030.31
• linux-image-realtime-6.8.1 – 6.8.1-1030.31
• linux-image-virtual – 6.8.0-78.78
• linux-image-virtual-6.8 – 6.8.0-78.78

22.04 jammy

• linux-image-6.8.0-78-lowlatency – 6.8.0-78.78.1~22.04.1
• linux-image-6.8.0-78-lowlatency-64k – 6.8.0-78.78.1~22.04.1
• linux-image-lowlatency-6.8 – 6.8.0-78.78.1~22.04.1
• linux-image-lowlatency-64k-6.8 – 6.8.0-78.78.1~22.04.1
• linux-image-lowlatency-64k-hwe-22.04 – 6.8.0-78.78.1~22.04.1
• linux-image-lowlatency-hwe-22.04 – 6.8.0-78.78.1~22.04.1