Ubuntu Security Notices
USN-8605-1

USN-8605-1: Linux kernel (Azure CVM) vulnerabilities

Publication date

24 July 2026

Overview

Several security issues were fixed in the Linux kernel.

Releases

24.04 LTS

Packages

linux-azure-fde-6.17 - Linux kernel for Microsoft Azure CVM 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:

Foo-over-UDP (FOU);
ARM64 architecture;
x86 architecture;
Block layer subsystem;
Cryptographic API;
Drivers core;
Null block device driver;
Bluetooth drivers;
Counter interface drivers;
DMA engine subsystem;
DPLL subsystem;
GPIO subsystem;
GPU drivers;
I2C subsystem;
IIO ADC drivers;
IIO subsystem;
InfiniBand drivers;
On-Chip Interconnect management framework;
IOMMU subsystem;
IRQ chip drivers;
Modular ISDN driver;
LED subsystem;
Multiple devices driver;
UACCE accelerator framework;
MMC subsystem;
Ethernet bonding driver;
Network...

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:

Foo-over-UDP (FOU);
ARM64 architecture;
x86 architecture;
Block layer subsystem;
Cryptographic API;
Drivers core;
Null block device driver;
Bluetooth drivers;
Counter interface drivers;
DMA engine subsystem;
DPLL subsystem;
GPIO subsystem;
GPU drivers;
I2C subsystem;
IIO ADC drivers;
IIO subsystem;
InfiniBand drivers;
On-Chip Interconnect management framework;
IOMMU subsystem;
IRQ chip drivers;
Modular ISDN driver;
LED subsystem;
Multiple devices driver;
UACCE accelerator framework;
MMC subsystem;
Ethernet bonding driver;
Network drivers;
Mellanox network drivers;
Microsoft Azure Network Adapter (MANA) driver;
STMicroelectronics network drivers;
NVME drivers;
Device tree and open firmware driver;
PHY drivers;
x86 platform drivers;
i.MX PM domains;
SCSI subsystem;
SLIMbus drivers;
SPI subsystem;
TTY drivers;
USB Host Controller drivers;
USB over IP driver;
W1 Dallas's 1-wire bus driver;
Xen hypervisor drivers;
BTRFS file system;
File systems infrastructure;
EFI Variable file system;
Ext4 file system;
FUSE (File system in Userspace);
Network file systems library;
Network file system (NFS) client;
Network file system (NFS) server daemon;
SMB network file system;
Memory Management;
Kernel thread helper (kthread);
Memory management;
Scheduler infrastructure;
Tracing infrastructure;
IPv6 networking;
Netfilter;
NFC subsystem;
io_uring subsystem;
Perf events;
Kernel exit() syscall;
Hibernation control;
Timer subsystem;
BPF subsystem;
Floating proportions library;
Scatterlist API;
B.A.T.M.A.N. meshing protocol;
Bluetooth subsystem;
Ethernet bridge;
CAN network layer;
Ceph Core library;
Networking core;
IPv4 networking;
L2TP protocol;
MAC80211 subsystem;
Multipath TCP;
NET/ROM layer;
RxRPC session sockets;
Network traffic control;
SCTP protocol;
SMC sockets;
VMware vSockets driver;
Wireless networking;
X.25 network layer;
ALSA AC97 driver;
Creative Sound Blaster X-Fi driver;
Texas InstrumentS Audio (ASoC/HDA) drivers;
USB sound devices

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release	Package Version
24.04 LTS noble	linux-image-6.17.0-1018-azure-fde – 6.17.0-1018.18~24.04.1
	linux-image-azure-fde – 6.17.0-1018.18~24.04.1
	linux-image-azure-fde-6.17 – 6.17.0-1018.18~24.04.1