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Ubuntu 18.04: USN-7428-2 critical: Linux kernel DoS fix

ubuntu
Calendar Grey April 9, 2025
Dist Ubuntu Esm H88
Numerous vulnerabilities patched in the Linux kernel for Ubuntu 20.04 LTS, ensuring critical system integrity.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- 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-fips: Linux kernel with FIPS

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

FIPS

Details:

Demi Marie Obenour and Simon Gaiser discovered that several Xen para-

virtualization device frontends did not properly restrict the access rights

of device backends. An attacker could possibly use a malicious Xen backend

to gain access to memory pages of a guest VM or cause a denial of service

in the guest. (CVE-2022-23041)

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:

- HID subsystem;

- Network drivers;

- Mellanox network drivers;

- SCSI subsystem;

- ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory access control DoS Ubuntu kernel FIPS

Update Instructions

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

Ubuntu 18.04 LTS
   linux-image-4.15.0-1134-fips    4.15.0-1134.145
                                   Available with Ubuntu Pro
   linux-image-4.15.0-2080-gcp-fips  4.15.0-2080.86
                                   Available with Ubuntu Pro
   linux-image-4.15.0-2096-azure-fips  4.15.0-2096.102
                                   Available with Ubuntu Pro
   linux-image-4.15.0-2117-aws-fips  4.15.0-2117.123
                                   Available with Ubuntu Pro
   linux-image-aws-fips            4.15.0.2117.111
                                   Available with Ubuntu Pro
   linux-image-azure-fips          4.15.0.2096.92
                                   Available with Ubuntu Pro
   linux-image-fips                4.15.0.1134.131
                                   Available with Ubuntu Pro
   linux-image-gcp-fips            4.15.0.2080.78
                                   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-7428-2

https://ubuntu.com/security/notices/USN-7428-1

CVE-2021-47101, CVE-2021-47119, CVE-2022-23041, CVE-2024-26863,

CVE-2024-35960, CVE-2024-35973, CVE-2024-46826, CVE-2024-49948,

CVE-2024-49952, CVE-2024-50167, CVE-2024-50265, CVE-2024-50302,

CVE-2024-53165, CVE-2024-53227, CVE-2024-56595, CVE-2024-56600,

CVE-2024-56615, CVE-2024-56658, CVE-2025-21700, CVE-2025-21702

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7428-2

Topics%20covered

Topics Covered

security advisory access control DoS Ubuntu kernel FIPS

Package Information

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