Home / mailings [USN-7795-1] Linux kernel vulnerabilities
Posted on 02 October 2025
Ubuntu Security==========================================================================Ubuntu Security Notice USN-7795-1
October 02, 2025
linux, linux-aws, linux-aws-5.4, linux-bluefield, linux-gcp,
linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot,
linux-kvm, linux-raspi, linux-xilinx-zynqmp vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-bluefield: Linux kernel for NVIDIA BlueField platforms
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-iot: Linux kernel for IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors
- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-ibm-5.4: Linux kernel for IBM cloud 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:
- Ext4 file system;
- Network file system (NFS) server daemon;
- Packet sockets;
- Network traffic control;
- VMware vSockets driver;
(CVE-2025-37785, CVE-2025-38617, CVE-2025-21796, CVE-2025-38618,
CVE-2025-38477)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
linux-image-5.4.0-1055-iot 5.4.0-1055.58
Available with Ubuntu Pro
linux-image-5.4.0-1069-xilinx-zynqmp 5.4.0-1069.73
Available with Ubuntu Pro
linux-image-5.4.0-1097-ibm 5.4.0-1097.102
Available with Ubuntu Pro
linux-image-5.4.0-1110-bluefield 5.4.0-1110.117
Available with Ubuntu Pro
linux-image-5.4.0-1134-raspi 5.4.0-1134.147
Available with Ubuntu Pro
linux-image-5.4.0-1138-kvm 5.4.0-1138.147
Available with Ubuntu Pro
linux-image-5.4.0-1151-aws 5.4.0-1151.161
Available with Ubuntu Pro
linux-image-5.4.0-1154-gcp 5.4.0-1154.163
Available with Ubuntu Pro
linux-image-5.4.0-222-generic 5.4.0-222.242
Available with Ubuntu Pro
linux-image-5.4.0-222-generic-lpae 5.4.0-222.242
Available with Ubuntu Pro
linux-image-5.4.0-222-lowlatency 5.4.0-222.242
Available with Ubuntu Pro
linux-image-aws-5.4 5.4.0.1151.148
Available with Ubuntu Pro
linux-image-aws-lts-20.04 5.4.0.1151.148
Available with Ubuntu Pro
linux-image-bluefield 5.4.0.1110.106
Available with Ubuntu Pro
linux-image-bluefield-5.4 5.4.0.1110.106
Available with Ubuntu Pro
linux-image-gcp-5.4 5.4.0.1154.156
Available with Ubuntu Pro
linux-image-gcp-lts-20.04 5.4.0.1154.156
Available with Ubuntu Pro
linux-image-generic 5.4.0.222.214
Available with Ubuntu Pro
linux-image-generic-5.4 5.4.0.222.214
Available with Ubuntu Pro
linux-image-generic-lpae 5.4.0.222.214
Available with Ubuntu Pro
linux-image-generic-lpae-5.4 5.4.0.222.214
Available with Ubuntu Pro
linux-image-ibm-5.4 5.4.0.1097.126
Available with Ubuntu Pro
linux-image-ibm-lts-20.04 5.4.0.1097.126
Available with Ubuntu Pro
linux-image-kvm 5.4.0.1138.134
Available with Ubuntu Pro
linux-image-kvm-5.4 5.4.0.1138.134
Available with Ubuntu Pro
linux-image-lowlatency 5.4.0.222.214
Available with Ubuntu Pro
linux-image-lowlatency-5.4 5.4.0.222.214
Available with Ubuntu Pro
linux-image-oem 5.4.0.222.214
Available with Ubuntu Pro
linux-image-oem-osp1 5.4.0.222.214
Available with Ubuntu Pro
linux-image-raspi 5.4.0.1134.165
Available with Ubuntu Pro
linux-image-raspi-5.4 5.4.0.1134.165
Available with Ubuntu Pro
linux-image-raspi2 5.4.0.1134.165
Available with Ubuntu Pro
linux-image-virtual 5.4.0.222.214
Available with Ubuntu Pro
linux-image-virtual-5.4 5.4.0.222.214
Available with Ubuntu Pro
linux-image-xilinx-zynqmp 5.4.0.1069.69
Available with Ubuntu Pro
linux-image-xilinx-zynqmp-5.4 5.4.0.1069.69
Available with Ubuntu Pro
Ubuntu 18.04 LTS
linux-image-5.4.0-1097-ibm 5.4.0-1097.102~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1151-aws 5.4.0-1151.161~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1154-gcp 5.4.0-1154.163~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-222-generic 5.4.0-222.242~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-222-lowlatency 5.4.0-222.242~18.04.1
Available with Ubuntu Pro
linux-image-aws 5.4.0.1151.161~18.04.1
Available with Ubuntu Pro
linux-image-aws-5.4 5.4.0.1151.161~18.04.1
Available with Ubuntu Pro
linux-image-gcp 5.4.0.1154.163~18.04.1
Available with Ubuntu Pro
linux-image-gcp-5.4 5.4.0.1154.163~18.04.1
Available with Ubuntu Pro
linux-image-generic-5.4 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
linux-image-generic-hwe-18.04 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
linux-image-ibm 5.4.0.1097.102~18.04.1
Available with Ubuntu Pro
linux-image-ibm-5.4 5.4.0.1097.102~18.04.1
Available with Ubuntu Pro
linux-image-lowlatency-5.4 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
linux-image-lowlatency-hwe-18.04 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
linux-image-oem 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
linux-image-oem-osp1 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
linux-image-snapdragon-5.4 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
linux-image-snapdragon-hwe-18.04 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
linux-image-virtual-5.4 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
linux-image-virtual-hwe-18.04 5.4.0.222.242~18.04.1
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
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.
References:
https://ubuntu.com/security/notices/USN-7795-1
CVE-2025-21796, CVE-2025-37785, CVE-2025-38477, CVE-2025-38617,
CVE-2025-38618
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