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Ubuntu 18.04, 16.04: USN-7496-1 critical security fix for kernel

ubuntu
Calendar Grey May 7, 2025
Dist Ubuntu Esm H88
Critical security fix for Linux kernel impacting multiple Ubuntu releases and cloud environments, including necessary updates.
Several security issues were fixed in the Linux kernel.

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-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

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

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

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

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:

- Block layer subsystem;

- Character device driver;

- Hardware crypto device drivers;

- GPU drivers;

- Media drivers;

- Network drivers;

- SCSI subsystem;

- USB Gadget drivers;

- Framebuffer layer;

- Ceph distributed file system;

- File systems infrastru...

Read the Full Advisory

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Topics Covered

security advisory system update software issue ubuntu linux kernel cloud deployment

Update Instructions

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

Ubuntu 18.04 LTS
  linux-image-4.15.0-1142-oracle  4.15.0-1142.153
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1163-kvm     4.15.0-1163.168
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1173-gcp     4.15.0-1173.190
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1180-aws     4.15.0-1180.193
                                  Available with Ubuntu Pro
  linux-image-4.15.0-237-generic  4.15.0-237.249
                                  Available with Ubuntu Pro
  linux-image-4.15.0-237-lowlatency  4.15.0-237.249
                                  Available with Ubuntu Pro
  linux-image-aws-lts-18.04       4.15.0.1180.178
                                  Available with Ubuntu Pro
  linux-image-gcp-lts-18.04       4.15.0.1173.186
                                  Available with Ubuntu Pro
  linux-image-generic             4.15.0.237.221
                                  Available with Ubuntu Pro
  linux-image-kvm                 4.15.0.1163.154
                                  Available with Ubuntu Pro
  linux-image-lowlatency          4.15.0.237.221
                                  Available with Ubuntu Pro
  linux-image-oracle-lts-18.04    4.15.0.1142.147
                                  Available with Ubuntu Pro
  linux-image-virtual             4.15.0.237.221
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  linux-image-4.15.0-1142-oracle  4.15.0-1142.153~16.04.1
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1173-gcp     4.15.0-1173.190~16.04.1
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1180-aws     4.15.0-1180.193~16.04.1
                                  Available with Ubuntu Pro
  linux-image-4.15.0-237-generic  4.15.0-237.249~16.04.1
                                  Available with Ubuntu Pro
  linux-image-4.15.0-237-lowlatency  4.15.0-237.249~16.04.1
                                  Available with Ubuntu Pro
  linux-image-aws-hwe             4.15.0.1180.193~16.04.1
                                  Available with Ubuntu Pro
  linux-image-gcp                 4.15.0.1173.190~16.04.1
                                  Available with Ubuntu Pro
  linux-image-generic-hwe-16.04   4.15.0.237.249~16.04.1
                                  Available with Ubuntu Pro
  linux-image-gke                 4.15.0.1173.190~16.04.1
                                  Available with Ubuntu Pro
  linux-image-lowlatency-hwe-16.04  4.15.0.237.249~16.04.1
                                  Available with Ubuntu Pro
  linux-image-oem                 4.15.0.237.249~16.04.1
                                  Available with Ubuntu Pro
  linux-image-oracle              4.15.0.1142.153~16.04.1
                                  Available with Ubuntu Pro
  linux-image-virtual-hwe-16.04   4.15.0.237.249~16.04.1
                                  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-7496-1

CVE-2021-47150, CVE-2021-47163, CVE-2021-47191, CVE-2021-47219,

CVE-2023-52458, CVE-2023-52664, CVE-2023-52741, CVE-2023-52927,

CVE-2024-26689, CVE-2024-26915, CVE-2024-26974, CVE-2024-26996,

CVE-2024-35864, CVE-2024-36015, CVE-2024-36934, CVE-2024-46771,

CVE-2024-46780, CVE-2024-49925, CVE-2024-49944, CVE-2024-50237,

CVE-2024-50256, CVE-2024-50296, CVE-2024-53063, CVE-2024-53066,

CVE-2024-53140, CVE-2024-53173, CVE-2024-56598, CVE-2024-56631,

CVE-2024-56642, CVE-2024-56650, CVE-2024-56651, CVE-2024-56770,

CVE-2025-21971

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7496-1

Topics%20covered

Topics Covered

security advisory system update software issue ubuntu linux kernel cloud deployment

Package Information

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