[USN-7328-3] Linux kernel vulnerabilities

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Ubuntu Security Notice USN-7328-3
March 14, 2025

linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15
vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems

Details:

Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)

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;
(CVE-2024-56672)

Update instructions:

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

Ubuntu 22.04 LTS
linux-image-5.15.0-1082-azure 5.15.0-1082.91
linux-image-5.15.0-1082-azure-fde 5.15.0-1082.91.1
linux-image-azure-fde-lts-22.04 5.15.0.1082.91.59
linux-image-azure-lts-22.04 5.15.0.1082.80

Ubuntu 20.04 LTS
linux-image-5.15.0-1082-azure 5.15.0-1082.91~20.04.1
linux-image-5.15.0-1082-azure-fde 5.15.0-1082.91~20.04.1.1
linux-image-azure 5.15.0.1082.91~20.04.1
linux-image-azure-cvm 5.15.0.1082.91~20.04.1
linux-image-azure-fde 5.15.0.1082.91~20.04.1.58

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-7328-3
https://ubuntu.com/security/notices/USN-7328-2
https://ubuntu.com/security/notices/USN-7328-1
CVE-2024-56672, CVE-2025-0927

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1082.91
https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1082.91.1
https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1082.91~20.04.1
https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1082.91~20.04.1.1