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Alerts This Week
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Ubuntu 22.04 & 20.04 LTS: Critical Kernel Info Disclosure USN-7862-1

ubuntu
Calendar Grey November 6, 2025
Dist Ubuntu Esm H88
Ubuntu 22.04 & 20.04 LTS kernel exposes sensitive data due to insufficient isolation; update recommended.
The system could be made to expose sensitive information.

Summary

The system could be made to expose sensitive information.

Software Description:

- linux: Linux kernel

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gke: Linux kernel for Google Container Engine (GKE) systems

- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems

- linux-ibm: Linux kernel for IBM cloud systems

- linux-intel-iotg: Linux kernel for Intel IoT platforms

- linux-lowlatency: Linux low latency kernel

- linux-nvidia: Linux kernel for NVIDIA systems

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems

- linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) systems

- linux-hwe-5.15: Linux hardware enablement (HWE) kernel

- linux-ibm-5.15: Linux kernel for IBM cloud systems

- linux-intel-iotg-5.15: Linux kernel for Intel IoT platforms

- linux-lowlatency-hwe-5.15: Linux low lat...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory update critical Ubuntu information disclosure Linux kernel

Update Instructions

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

Ubuntu 22.04 LTS
   linux-image-5.15.0-1079-gkeop   5.15.0-1079.87
   linux-image-5.15.0-1090-ibm     5.15.0-1090.93
   linux-image-5.15.0-1091-intel-iotg  5.15.0-1091.97
   linux-image-5.15.0-1091-nvidia  5.15.0-1091.92
   linux-image-5.15.0-1091-nvidia-lowlatency  5.15.0-1091.92
   linux-image-5.15.0-1092-gke     5.15.0-1092.98
   linux-image-5.15.0-1093-oracle  5.15.0-1093.99
   linux-image-5.15.0-1096-aws     5.15.0-1096.103
   linux-image-5.15.0-1096-aws-64k  5.15.0-1096.103
   linux-image-5.15.0-1096-gcp     5.15.0-1096.105
   linux-image-5.15.0-161-generic  5.15.0-161.171
   linux-image-5.15.0-161-generic-64k  5.15.0-161.171
   linux-image-5.15.0-161-generic-lpae  5.15.0-161.171
   linux-image-5.15.0-161-lowlatency  5.15.0-161.171
   linux-image-5.15.0-161-lowlatency-64k  5.15.0-161.171
   linux-image-aws-5.15            5.15.0.1096.99
   linux-image-aws-64k-5.15        5.15.0.1096.99
   linux-image-aws-64k-lts-22.04   5.15.0.1096.99
   linux-image-aws-lts-22.04       5.15.0.1096.99
   linux-image-gcp-5.15            5.15.0.1096.92
   linux-image-gcp-lts-22.04       5.15.0.1096.92
   linux-image-generic             5.15.0.161.157
   linux-image-generic-5.15        5.15.0.161.157
   linux-image-generic-64k         5.15.0.161.157
   linux-image-generic-64k-5.15    5.15.0.161.157
   linux-image-generic-lpae        5.15.0.161.157
   linux-image-generic-lpae-5.15   5.15.0.161.157
   linux-image-gke                 5.15.0.1092.91
   linux-image-gke-5.15            5.15.0.1092.91
   linux-image-gkeop               5.15.0.1079.78
   linux-image-gkeop-5.15          5.15.0.1079.78
   linux-image-ibm                 5.15.0.1090.86
   linux-image-ibm-5.15            5.15.0.1090.86
   linux-image-intel-iotg          5.15.0.1091.91
   linux-image-intel-iotg-5.15     5.15.0.1091.91
   linux-image-lowlatency          5.15.0.161.139
   linux-image-lowlatency-5.15     5.15.0.161.139
   linux-image-lowlatency-64k      5.15.0.161.139
   linux-image-lowlatency-64k-5.15  5.15.0.161.139
   linux-image-nvidia              5.15.0.1091.91
   linux-image-nvidia-5.15         5.15.0.1091.91
   linux-image-nvidia-lowlatency   5.15.0.1091.91
   linux-image-nvidia-lowlatency-5.15  5.15.0.1091.91
   linux-image-oracle-5.15         5.15.0.1093.89
   linux-image-oracle-lts-22.04    5.15.0.1093.89
   linux-image-virtual             5.15.0.161.157
   linux-image-virtual-5.15        5.15.0.161.157

Ubuntu 20.04 LTS
   linux-image-5.15.0-1090-ibm     5.15.0-1090.93~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1091-intel-iotg  5.15.0-1091.97~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1093-oracle  5.15.0-1093.99~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1096-aws     5.15.0-1096.103~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1096-gcp     5.15.0-1096.105~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-161-generic  5.15.0-161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-161-generic-64k  5.15.0-161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-161-generic-lpae  5.15.0-161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-161-lowlatency  5.15.0-161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-161-lowlatency-64k  5.15.0-161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-aws                 5.15.0.1096.103~20.04.1
                                   Available with Ubuntu Pro
   linux-image-aws-5.15            5.15.0.1096.103~20.04.1
                                   Available with Ubuntu Pro
   linux-image-gcp                 5.15.0.1096.105~20.04.1
                                   Available with Ubuntu Pro
   linux-image-gcp-5.15            5.15.0.1096.105~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-5.15        5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-64k-5.15    5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-64k-hwe-20.04  5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-hwe-20.04   5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-lpae-5.15   5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-lpae-hwe-20.04  5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-ibm                 5.15.0.1090.93~20.04.1
                                   Available with Ubuntu Pro
   linux-image-ibm-5.15            5.15.0.1090.93~20.04.1
                                   Available with Ubuntu Pro
   linux-image-intel               5.15.0.1091.97~20.04.1
                                   Available with Ubuntu Pro
   linux-image-intel-iotg          5.15.0.1091.97~20.04.1
                                   Available with Ubuntu Pro
   linux-image-intel-iotg-5.15     5.15.0.1091.97~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-5.15     5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-64k-5.15  5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-64k-hwe-20.04  5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-hwe-20.04  5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oem-20.04           5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oem-20.04b          5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oem-20.04c          5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oem-20.04d          5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oracle              5.15.0.1093.99~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oracle-5.15         5.15.0.1093.99~20.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-5.15        5.15.0.161.171~20.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-hwe-20.04   5.15.0.161.171~20.04.1
                                   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-7862-1

CVE-2025-40300

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7862-1

Topics%20covered

Topics Covered

security advisory update critical Ubuntu information disclosure Linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1096.103
https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1079.87
https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-161.171

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