1. Ubuntu Security Notices
  2. USN-8493-2

USN-8493-2: Linux kernel (Oracle) vulnerabilities

Publication date

2 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:

  • RISC-V architecture;
  • Cryptographic API;
  • InfiniBand drivers;
  • IOMMU subsystem;
  • Network drivers;
  • STMicroelectronics network drivers;
  • NVME drivers;
  • x86 platform drivers;
  • SCSI subsystem;
  • SPI subsystem;
  • TCM subsystem;
  • USB over IP driver;
  • File systems infrastructure;
  • HFS+ file system;
  • Network file system (NFS) server daemon;
  • SMB network file system;
  • IPv6 networking;
  • Tracing infrastructure;
  • Timer subsystem;
  • B.A.T.M.A.N. meshing protocol;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • Ceph Core library;
  • IPv4 networking;
  • MAC80211 subsystem;
  • Multipath...

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;
  • Cryptographic API;
  • InfiniBand drivers;
  • IOMMU subsystem;
  • Network drivers;
  • STMicroelectronics network drivers;
  • NVME drivers;
  • x86 platform drivers;
  • SCSI subsystem;
  • SPI subsystem;
  • TCM subsystem;
  • USB over IP driver;
  • File systems infrastructure;
  • HFS+ file system;
  • Network file system (NFS) server daemon;
  • SMB network file system;
  • IPv6 networking;
  • Tracing infrastructure;
  • Timer subsystem;
  • B.A.T.M.A.N. meshing protocol;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • Ceph Core library;
  • IPv4 networking;
  • MAC80211 subsystem;
  • Multipath TCP;
  • Netfilter;
  • RxRPC session sockets;
  • SMC sockets;
  • Sun RPC protocol;
  • X.25 network layer;
  • AMD SoC Alsa drivers;
  • KVM subsystem

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
20.04 LTS focal linux-image-5.15.0-1108-oracle –  5.15.0-1108.114~20.04.1  
linux-image-oracle –  5.15.0.1108.114~20.04.1  
linux-image-oracle-5.15 –  5.15.0.1108.114~20.04.1  

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References

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