1. Ubuntu Security Notices
  2. USN-8492-1

USN-8492-1: Linux kernel vulnerabilities

Publication date

1 July 2026

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;
  • MIPS architecture;
  • PowerPC architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ACPI drivers;
  • ATM drivers;
  • RNBD block device driver;
  • Ublk userspace block driver;
  • Bus devices;
  • Character device driver;
  • TPM device driver;
  • Clock framework and drivers;
  • Clocksource drivers;
  • CPU idle management framework;
  • Hardware crypto device drivers;
  • DMA engine subsystem;
  • EFI core;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • Hardware monitoring drivers;
  • IIO subsystem;
  • InfiniBand drivers;
  • IOMMU subsystem;
  • Multiple devices...

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;
  • MIPS architecture;
  • PowerPC architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ACPI drivers;
  • ATM drivers;
  • RNBD block device driver;
  • Ublk userspace block driver;
  • Bus devices;
  • Character device driver;
  • TPM device driver;
  • Clock framework and drivers;
  • Clocksource drivers;
  • CPU idle management framework;
  • Hardware crypto device drivers;
  • DMA engine subsystem;
  • EFI core;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • Hardware monitoring drivers;
  • IIO subsystem;
  • InfiniBand drivers;
  • IOMMU subsystem;
  • Multiple devices driver;
  • Media drivers;
  • Multifunction device drivers;
  • Broadcom VK accelerator driver;
  • MOST (Media Oriented Systems Transport) drivers;
  • MTD block device drivers;
  • Ethernet bonding driver;
  • Network drivers;
  • Mellanox network drivers;
  • STMicroelectronics network drivers;
  • NTB driver;
  • NVME drivers;
  • PCI subsystem;
  • Performance monitor drivers;
  • Pin controllers subsystem;
  • x86 platform drivers;
  • Power supply drivers;
  • RapidIO drivers;
  • RAS (Reliability, Availability, Serviceability) subsystem;
  • Remote Processor subsystem;
  • RPMSG subsystem;
  • S/390 drivers;
  • SCSI subsystem;
  • MediaTek SoC drivers;
  • Texas Instruments SoC drivers;
  • SPI subsystem;
  • Greybus lights staging drivers;
  • Realtek RTL8723BS SDIO drivers;
  • UFS subsystem;
  • ChipIdea USB driver;
  • DesignWare USB3 driver;
  • USB over IP driver;
  • vDPA drivers;
  • Virtio Host (VHOST) subsystem;
  • Framebuffer layer;
  • BTRFS file system;
  • File systems infrastructure;
  • Ceph distributed file system;
  • Ext4 file system;
  • F2FS file system;
  • FAT file system;
  • GFS2 file system;
  • HFS+ file system;
  • JFS file system;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • NTFS3 file system;
  • OCFS2 file system;
  • Proc file system;
  • Pstore file system;
  • Diskquota system;
  • SMB network file system;
  • XFS file system;
  • Audit subsystem;
  • Memory Management;
  • IPv6 networking;
  • Netfilter;
  • Tracing infrastructure;
  • Kernel kexec() syscall;
  • RCU subsystem;
  • Scheduler infrastructure;
  • Scatterlist API;
  • 9P file system network protocol;
  • Asynchronous Transfer Mode (ATM) subsystem;
  • B.A.T.M.A.N. meshing protocol;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • Ceph Core library;
  • Networking core;
  • IPv4 networking;
  • KCM (Kernel Connection Multiplexor) sockets driver;
  • Multipath TCP;
  • NFC subsystem;
  • RDS protocol;
  • RxRPC session sockets;
  • Network traffic control;
  • SMC sockets;
  • Sun RPC protocol;
  • X.25 network layer;
  • XFRM subsystem;
  • AppArmor security module;
  • Simplified Mandatory Access Control Kernel framework;
  • SOF 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
24.04 LTS noble linux-image-6.8.0-1057-oracle –  6.8.0-1057.58
linux-image-6.8.0-1057-oracle-64k –  6.8.0-1057.58
linux-image-6.8.0-1058-nvidia –  6.8.0-1058.61
linux-image-6.8.0-1058-nvidia-64k –  6.8.0-1058.61
linux-image-6.8.0-1060-aws –  6.8.0-1060.63
linux-image-6.8.0-1060-aws-64k –  6.8.0-1060.63
linux-image-6.8.0-1060-aws-fips –  6.8.0-1060.63+fips1  
linux-image-6.8.0-1060-ibm –  6.8.0-1060.61
linux-image-6.8.0-1063-gcp –  6.8.0-1063.69
linux-image-6.8.0-1063-gcp-64k –  6.8.0-1063.69
linux-image-6.8.0-1063-gcp-fips –  6.8.0-1063.69+fips1  
linux-image-6.8.0-134-generic –  6.8.0-134.134
linux-image-6.8.0-134-generic-64k –  6.8.0-134.134
linux-image-6.8.1-1055-realtime –  6.8.1-1055.56  
linux-image-aws-6.8 –  6.8.0-1060.63
linux-image-aws-64k-6.8 –  6.8.0-1060.63
linux-image-aws-64k-lts-24.04 –  6.8.0-1060.63
linux-image-aws-fips –  6.8.0-1060.63+fips1  
linux-image-aws-fips-6.8 –  6.8.0-1060.63+fips1  
linux-image-aws-lts-24.04 –  6.8.0-1060.63
linux-image-gcp-6.8 –  6.8.0-1063.69
linux-image-gcp-64k-6.8 –  6.8.0-1063.69
linux-image-gcp-64k-lts-24.04 –  6.8.0-1063.69
linux-image-gcp-fips –  6.8.0-1063.69+fips1  
linux-image-gcp-fips-6.8 –  6.8.0-1063.69+fips1  
linux-image-gcp-lts-24.04 –  6.8.0-1063.69
linux-image-generic –  6.8.0-134.134
linux-image-generic-6.8 –  6.8.0-134.134
linux-image-generic-64k –  6.8.0-134.134
linux-image-generic-64k-6.8 –  6.8.0-134.134
linux-image-generic-lpae –  6.8.0-134.134
linux-image-ibm –  6.8.0-1060.61
linux-image-ibm-6.8 –  6.8.0-1060.61
linux-image-ibm-classic –  6.8.0-1060.61
linux-image-ibm-lts-24.04 –  6.8.0-1060.61
linux-image-intel-iot-realtime –  6.8.1-1055.56  
linux-image-intel-iotg –  6.8.0-134.134
linux-image-kvm –  6.8.0-134.134
linux-image-laptop-23.10 –  6.8.0-134.134
linux-image-nvidia –  6.8.0-1058.61
linux-image-nvidia-6.8 –  6.8.0-1058.61
linux-image-nvidia-64k –  6.8.0-1058.61
linux-image-nvidia-64k-6.8 –  6.8.0-1058.61
linux-image-oem-20.04 –  6.8.0-134.134
linux-image-oem-20.04b –  6.8.0-134.134
linux-image-oem-20.04c –  6.8.0-134.134
linux-image-oem-20.04d –  6.8.0-134.134
linux-image-oem-22.04 –  6.8.0-134.134
linux-image-oracle-6.8 –  6.8.0-1057.58
linux-image-oracle-64k-6.8 –  6.8.0-1057.58
linux-image-oracle-64k-lts-24.04 –  6.8.0-1057.58
linux-image-oracle-lts-24.04 –  6.8.0-1057.58
linux-image-realtime –  6.8.1-1055.56  
linux-image-realtime-6.8.1 –  6.8.1-1055.56  
linux-image-virtual –  6.8.0-134.134
linux-image-virtual-6.8 –  6.8.0-134.134
22.04 LTS jammy linux-image-6.8.0-1058-nvidia –  6.8.0-1058.61~22.04.1
linux-image-6.8.0-1058-nvidia-64k –  6.8.0-1058.61~22.04.1
linux-image-6.8.1-1055-realtime –  6.8.1-1055.56~22.04.1  
linux-image-nvidia-6.8 –  6.8.0-1058.61~22.04.1
linux-image-nvidia-64k-6.8 –  6.8.0-1058.61~22.04.1
linux-image-nvidia-64k-hwe-22.04 –  6.8.0-1058.61~22.04.1
linux-image-nvidia-hwe-22.04 –  6.8.0-1058.61~22.04.1
linux-image-realtime-6.8.1 –  6.8.1-1055.56~22.04.1  
linux-image-realtime-hwe-22.04 –  6.8.1-1055.56~22.04.1  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›