[USN-7553-6] Linux kernel (Azure FIPS) vulnerabilities

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Ubuntu Security Notice USN-7553-6
June 09, 2025

linux-azure-fips vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS

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:
- Clock framework and drivers;
- GPU drivers;
- Parport drivers;
- Ext4 file system;
- JFFS2 file system;
- JFS file system;
- File systems infrastructure;
- Sun RPC protocol;
- USB sound devices;
(CVE-2024-56551, CVE-2024-47701, CVE-2024-57850, CVE-2024-26966,
CVE-2021-47211, CVE-2024-56596, CVE-2024-53155, CVE-2024-42301,
CVE-2024-53168)

Update instructions:

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

Ubuntu 18.04 LTS
linux-image-4.15.0-2098-azure-fips 4.15.0-2098.104
Available with Ubuntu Pro
linux-image-azure-fips 4.15.0.2098.94
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-7553-6
https://ubuntu.com/security/notices/USN-7553-5
https://ubuntu.com/security/notices/USN-7553-4
https://ubuntu.com/security/notices/USN-7553-3
https://ubuntu.com/security/notices/USN-7553-2
https://ubuntu.com/security/notices/USN-7553-1
CVE-2021-47211, CVE-2024-26966, CVE-2024-42301, CVE-2024-47701,
CVE-2024-53155, CVE-2024-53168, CVE-2024-56551, CVE-2024-56596,
CVE-2024-57850

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure-fips/4.15.0-2098.104