Ubuntu Security Notices
USN-8658-1

USN-8658-1: Linux kernel vulnerabilities

Publication date

20 August 2026

Overview

Several security issues were fixed in the Linux kernel.

Releases

22.04 LTS 20.04 LTS

Packages

linux - Linux kernel
linux-aws - Linux kernel for Amazon Web Services (AWS) systems
linux-aws-fips - Linux kernel for Amazon Web Services (AWS) systems with FIPS
linux-azure-fips - Linux kernel for Microsoft Azure Cloud systems with FIPS
linux-gkeop - Linux kernel for Google Container Engine (GKE) systems
linux-ibm-5.15 - Linux kernel for IBM cloud systems
linux-intel-iot-realtime - Linux kernel for Intel IoT Real-time platforms
linux-intel-iotg - Linux kernel for Intel IoT platforms
linux-intel-iotg-5.15 - Linux kernel for Intel IoT platforms
linux-kvm - Linux kernel for cloud environments
linux-nvidia - Linux kernel for NVIDIA systems
linux-nvidia-tegra - Linux kernel for NVIDIA Tegra systems
linux-nvidia-tegra-5.15 - Linux kernel for NVIDIA Tegra systems
linux-oracle - Linux kernel for Oracle Cloud systems
linux-oracle-5.15 - Linux kernel for Oracle Cloud systems
linux-realtime - Linux kernel for Real-time systems
linux-xilinx-zynqmp - Linux kernel for Xilinx ZynqMP processors

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:

Open vSwitch;
SCTP protocol

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:

Open vSwitch;
SCTP protocol

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
22.04 LTS jammy	linux-image-5.15.0-1066-nvidia-tegra – 5.15.0-1066.68
	linux-image-5.15.0-1066-nvidia-tegra-rt – 5.15.0-1066.68
	linux-image-5.15.0-1077-xilinx-zynqmp – 5.15.0-1077.81
	linux-image-5.15.0-1097-gkeop – 5.15.0-1097.105
	linux-image-5.15.0-1106-intel-iot-realtime – 5.15.0-1106.108
	linux-image-5.15.0-1106-kvm – 5.15.0-1106.111
	linux-image-5.15.0-1109-intel-iotg – 5.15.0-1109.115
	linux-image-5.15.0-1109-nvidia – 5.15.0-1109.110
	linux-image-5.15.0-1109-nvidia-lowlatency – 5.15.0-1109.110
	linux-image-5.15.0-1111-oracle – 5.15.0-1111.117
	linux-image-5.15.0-1113-realtime – 5.15.0-1113.122
	linux-image-5.15.0-1114-aws – 5.15.0-1114.121
	linux-image-5.15.0-1114-aws-64k – 5.15.0-1114.121
	linux-image-5.15.0-1114-aws-fips – 5.15.0-1114.121+fips1
	linux-image-5.15.0-1119-azure-fips – 5.15.0-1119.128+fips1
	linux-image-5.15.0-190-generic – 5.15.0-190.200
	linux-image-5.15.0-190-generic-64k – 5.15.0-190.200
	linux-image-5.15.0-190-generic-lpae – 5.15.0-190.200
	linux-image-aws-5.15 – 5.15.0.1114.117
	linux-image-aws-64k-5.15 – 5.15.0.1114.117
	linux-image-aws-64k-lts-22.04 – 5.15.0.1114.117
	linux-image-aws-fips – 5.15.0.1114.110
	linux-image-aws-fips-5.15 – 5.15.0.1114.110
	linux-image-aws-lts-22.04 – 5.15.0.1114.117
	linux-image-azure-fips – 5.15.0.1119.104
	linux-image-azure-fips-5.15 – 5.15.0.1119.104
	linux-image-generic – 5.15.0.190.169
	linux-image-generic-5.15 – 5.15.0.190.169
	linux-image-generic-64k – 5.15.0.190.169
	linux-image-generic-64k-5.15 – 5.15.0.190.169
	linux-image-generic-lpae – 5.15.0.190.169
	linux-image-generic-lpae-5.15 – 5.15.0.190.169
	linux-image-gkeop – 5.15.0.1097.96
	linux-image-gkeop-5.15 – 5.15.0.1097.96
	linux-image-intel-iot-realtime – 5.15.0.1106.110
	linux-image-intel-iot-realtime-5.15 – 5.15.0.1106.110
	linux-image-intel-iotg – 5.15.0.1109.108
	linux-image-intel-iotg-5.15 – 5.15.0.1109.108
	linux-image-kvm – 5.15.0.1106.102
	linux-image-kvm-5.15 – 5.15.0.1106.102
	linux-image-nvidia – 5.15.0.1109.109
	linux-image-nvidia-5.15 – 5.15.0.1109.109
	linux-image-nvidia-lowlatency – 5.15.0.1109.109
	linux-image-nvidia-lowlatency-5.15 – 5.15.0.1109.109
	linux-image-nvidia-tegra – 5.15.0.1066.66
	linux-image-nvidia-tegra-5.15 – 5.15.0.1066.66
	linux-image-nvidia-tegra-rt – 5.15.0.1066.66
	linux-image-nvidia-tegra-rt-5.15 – 5.15.0.1066.66
	linux-image-oracle-5.15 – 5.15.0.1111.107
	linux-image-oracle-lts-22.04 – 5.15.0.1111.107
	linux-image-realtime – 5.15.0.1113.117
	linux-image-realtime-5.15 – 5.15.0.1113.117
	linux-image-virtual – 5.15.0.190.169
	linux-image-virtual-5.15 – 5.15.0.190.169
	linux-image-xilinx-zynqmp – 5.15.0.1077.80
	linux-image-xilinx-zynqmp-5.15 – 5.15.0.1077.80
20.04 LTS focal	linux-image-5.15.0-1066-nvidia-tegra – 5.15.0-1066.68~20.04.1
	linux-image-5.15.0-1066-nvidia-tegra-rt – 5.15.0-1066.68~20.04.1
	linux-image-5.15.0-1108-ibm – 5.15.0-1108.112~20.04.1
	linux-image-5.15.0-1109-intel-iotg – 5.15.0-1109.115~20.04.1
	linux-image-5.15.0-1111-oracle – 5.15.0-1111.117~20.04.1
	linux-image-ibm – 5.15.0.1108.112~20.04.1
	linux-image-ibm-5.15 – 5.15.0.1108.112~20.04.1
	linux-image-intel – 5.15.0.1109.115~20.04.1
	linux-image-intel-iotg – 5.15.0.1109.115~20.04.1
	linux-image-intel-iotg-5.15 – 5.15.0.1109.115~20.04.1
	linux-image-nvidia-tegra – 5.15.0.1066.68~20.04.1
	linux-image-nvidia-tegra-5.15 – 5.15.0.1066.68~20.04.1
	linux-image-nvidia-tegra-rt – 5.15.0.1066.68~20.04.1
	linux-image-nvidia-tegra-rt-5.15 – 5.15.0.1066.68~20.04.1
	linux-image-oracle – 5.15.0.1111.117~20.04.1
	linux-image-oracle-5.15 – 5.15.0.1111.117~20.04.1

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References

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