[USN-7596-1] Linux kernel (Azure) vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7596-1
June 24, 2025

linux-azure, linux-azure-6.8 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-azure-6.8: Linux kernel for Microsoft Azure cloud systems

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:
- GPIO subsystem;
- GPU drivers;
- InfiniBand drivers;
- IRQ chip drivers;
- Network drivers;
- Mellanox network drivers;
- i.MX PM domains;
- SCSI subsystem;
- USB Serial drivers;
- AFS file system;
- GFS2 file system;
- File systems infrastructure;
- File system notification infrastructure;
- Overlay file system;
- Proc file system;
- SMB network file system;
- Timer subsystem;
- Kernel CPU control infrastructure;
- Memory management;
- Networking core;
- DCCP (Datagram Congestion Control Protocol);
- IPv6 networking;
- IEEE 802.15.4 subsystem;
- Open vSwitch;
- Network traffic control;
- VMware vSockets driver;
(CVE-2025-21675, CVE-2025-21697, CVE-2025-21668, CVE-2024-57951,
CVE-2025-21680, CVE-2024-50157, CVE-2025-21699, CVE-2025-21669,
CVE-2025-21678, CVE-2025-21665, CVE-2024-57924, CVE-2024-57949,
CVE-2024-53124, CVE-2025-21684, CVE-2025-21676, CVE-2025-21672,
CVE-2025-21682, CVE-2025-21670, CVE-2025-21690, CVE-2025-21673,
CVE-2025-21691, CVE-2024-57952, CVE-2025-21674, CVE-2025-21689,
CVE-2025-21943, CVE-2025-21692, CVE-2025-21667, CVE-2025-21666,
CVE-2024-57948, CVE-2025-21694, CVE-2025-21683, CVE-2025-21681)

Update instructions:

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

Ubuntu 24.04 LTS
linux-image-6.8.0-1030-azure 6.8.0-1030.35
linux-image-6.8.0-1030-azure-fde 6.8.0-1030.35
linux-image-azure-fde-lts-24.04 6.8.0-1030.35
linux-image-azure-lts-24.04 6.8.0-1030.35

Ubuntu 22.04 LTS
linux-image-6.8.0-1030-azure 6.8.0-1030.35~22.04.1
linux-image-6.8.0-1030-azure-fde 6.8.0-1030.35~22.04.1
linux-image-azure 6.8.0-1030.35~22.04.1
linux-image-azure-fde 6.8.0-1030.35~22.04.1

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-7596-1
CVE-2024-50157, CVE-2024-53124, CVE-2024-57924, CVE-2024-57948,
CVE-2024-57949, CVE-2024-57951, CVE-2024-57952, CVE-2025-21665,
CVE-2025-21666, CVE-2025-21667, CVE-2025-21668, CVE-2025-21669,
CVE-2025-21670, CVE-2025-21672, CVE-2025-21673, CVE-2025-21674,
CVE-2025-21675, CVE-2025-21676, CVE-2025-21678, CVE-2025-21680,
CVE-2025-21681, CVE-2025-21682, CVE-2025-21683, CVE-2025-21684,
CVE-2025-21689, CVE-2025-21690, CVE-2025-21691, CVE-2025-21692,
CVE-2025-21694, CVE-2025-21697, CVE-2025-21699, CVE-2025-21943

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/6.8.0-1030.35
https://launchpad.net/ubuntu/+source/linux-azure-6.8/6.8.0-1030.35~22.04.1