1. Ubuntu Security Notices
  2. USN-7384-1

USN-7384-1: Linux kernel (Azure) vulnerabilities

Publication date

27 March 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-azure - Linux kernel for Microsoft Azure Cloud systems

Details

Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)

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)

It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)

Several security issues were...

Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)

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)

It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)

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:

  • ARM32 architecture;
  • ARM64 architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ACPI drivers;
  • Drivers core;
  • ATA over ethernet (AOE) driver;
  • Network block device driver;
  • Ublk userspace block driver;
  • Compressed RAM block device driver;
  • TPM device driver;
  • CPU frequency scaling framework;
  • Hardware crypto device drivers;
  • DAX dirext access to differentiated memory framework;
  • ARM SCMI message protocol;
  • EFI core;
  • GPU drivers;
  • HID subsystem;
  • I2C subsystem;
  • I3C subsystem;
  • IIO subsystem;
  • InfiniBand drivers;
  • Input Device core drivers;
  • IOMMU subsystem;
  • IRQ chip drivers;
  • Mailbox framework;
  • Media drivers;
  • Ethernet bonding driver;
  • Network drivers;
  • Mellanox network drivers;
  • STMicroelectronics network drivers;
  • NTB driver;
  • Virtio pmem driver;
  • Parport drivers;
  • PCI subsystem;
  • Alibaba DDR Sub-System Driveway PMU driver;
  • Pin controllers subsystem;
  • x86 platform drivers;
  • Powercap sysfs driver;
  • Remote Processor subsystem;
  • SCSI subsystem;
  • SuperH / SH-Mobile drivers;
  • Direct Digital Synthesis drivers;
  • Thermal drivers;
  • TTY drivers;
  • UFS subsystem;
  • USB Device Class drivers;
  • USB Gadget drivers;
  • USB Host Controller drivers;
  • TI TPS6598x USB Power Delivery controller driver;
  • vDPA drivers;
  • Virtio Host (VHOST) subsystem;
  • Framebuffer layer;
  • AFS file system;
  • BTRFS file system;
  • File systems infrastructure;
  • Ceph distributed file system;
  • Ext4 file system;
  • F2FS file system;
  • JFS file system;
  • Network file systems library;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • NTFS3 file system;
  • SMB network file system;
  • BPF subsystem;
  • Network file system (NFS) superblock;
  • Virtio network driver;
  • Network traffic control;
  • Network sockets;
  • TCP network protocol;
  • User-space API (UAPI);
  • io_uring subsystem;
  • Perf events;
  • Kernel thread helper (kthread);
  • Padata parallel execution mechanism;
  • RCU subsystem;
  • Arbitrary resource management;
  • Static call mechanism;
  • Timer subsystem;
  • Tracing infrastructure;
  • Maple Tree data structure library;
  • Memory management;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • CAN network layer;
  • Networking core;
  • Distributed Switch Architecture;
  • IPv4 networking;
  • IPv6 networking;
  • MAC80211 subsystem;
  • IEEE 802.15.4 subsystem;
  • Multipath TCP;
  • NCSI (Network Controller Sideband Interface) driver;
  • Netfilter;
  • Netlink;
  • RxRPC session sockets;
  • SCTP protocol;
  • TIPC protocol;
  • Unix domain sockets;
  • Wireless networking;
  • eXpress Data Path;
  • AudioScience HPI driver;
  • KVM core

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 noble linux-image-6.8.0-1025-azure –  6.8.0-1025.30
linux-image-6.8.0-1025-azure-fde –  6.8.0-1025.30
linux-image-azure-fde-lts-24.04 –  6.8.0-1025.30
linux-image-azure-lts-24.04 –  6.8.0-1025.30

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References

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