1. Ubuntu Security Notices
  2. USN-8876-1

USN-8876-1: Linux kernel (Azure CVM) vulnerabilities

Publication date

6 October 2026

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that the i.MX clock driver in the Linux kernel did not
properly handle certain memory allocation failure conditions, leading to a
null pointer dereference vulnerability. A local attacker could possibly use
this to cause a denial of service (system crash). (CVE-2022-3114)

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;
  • MIPS architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • User-Mode Linux (UML);
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ACPI drivers;
  • Android drivers;
  • Serial ATA and Parallel ATA drivers;
  • Drivers core;
  • DRBD Distributed Replicated Block Device...

It was discovered that the i.MX clock driver in the Linux kernel did not
properly handle certain memory allocation failure conditions, leading to a
null pointer dereference vulnerability. A local attacker could possibly use
this to cause a denial of service (system crash). (CVE-2022-3114)

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;
  • MIPS architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • User-Mode Linux (UML);
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ACPI drivers;
  • Android drivers;
  • Serial ATA and Parallel ATA drivers;
  • Drivers core;
  • DRBD Distributed Replicated Block Device drivers;
  • Rados block device (RBD) driver;
  • Bluetooth drivers;
  • Cdrom driver;
  • Character device driver;
  • Hardware random number generator core;
  • TPM device driver;
  • Data acquisition framework and drivers;
  • CPU frequency scaling framework;
  • Hardware crypto device drivers;
  • DAX dirext access to differentiated memory framework;
  • DMA engine subsystem;
  • FireWire subsystem;
  • Arm Firmware Framework for ARMv8-A(FFA);
  • Intel Stratix 10 firmware drivers;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • Hardware monitoring drivers;
  • Intel Trace Hub HW tracing drivers;
  • I2C subsystem;
  • IIO subsystem;
  • IIO ADC drivers;
  • IIO Magnetometer sensors drivers;
  • InfiniBand drivers;
  • Input Device core drivers;
  • Input Device (Miscellaneous) drivers;
  • Input Device (Mouse) drivers;
  • IOMMU subsystem;
  • IRQ chip drivers;
  • LED subsystem;
  • Multiple devices driver;
  • Media drivers;
  • MemoryStick subsystem;
  • Multifunction device drivers;
  • Fastrpc Driver;
  • MTD block device drivers;
  • Network drivers;
  • Mellanox network drivers;
  • Microsoft Azure Network Adapter (MANA) driver;
  • Texas Instruments network drivers;
  • MediaTek network drivers;
  • NTB driver;
  • NVDIMM (Non-Volatile Memory Device) drivers;
  • NVME drivers;
  • PCI subsystem;
  • Pin controllers subsystem;
  • Generic PM domains;
  • Power supply drivers;
  • Voltage and Current Regulator drivers;
  • Reset controller framework;
  • S/390 drivers;
  • SCSI subsystem;
  • SLIMbus drivers;
  • SPI subsystem;
  • Media staging drivers;
  • Media Oriented Systems Transport (MOST) driver;
  • NVIDIA Tegra embedded controller (NVEC) staging driver;
  • Realtek RTL8723BS SDIO drivers;
  • TCM subsystem;
  • Trusted Execution Environment drivers;
  • Thermal drivers;
  • Thunderbolt and USB4 drivers;
  • USB DSL drivers;
  • Cadence USB3 driver;
  • ULPI bus;
  • DesignWare USB3 driver;
  • USB Gadget drivers;
  • USB Host Controller drivers;
  • USB ChaosKey driver;
  • Siemens ID Mouse USB driver;
  • IOWarrior USB driver;
  • LD Didactic USB driver;
  • LEGO USB Tower driver;
  • USS720 USB parallel port adapter driver;
  • MediaTek USB3 DRD driver;
  • USB Serial drivers;
  • USB Type-C Port Controller Manager driver;
  • USB Type-C Connector System Software Interface driver;
  • USB over IP driver;
  • vDPA drivers;
  • VFIO drivers;
  • Virtio Host (VHOST) subsystem;
  • Framebuffer layer;
  • Watchdog drivers;
  • Xen hypervisor drivers;
  • AFS file system;
  • File systems infrastructure;
  • BTRFS file system;
  • Ceph distributed file system;
  • EROFS file system;
  • exFAT file system;
  • Ext4 file system;
  • F2FS file system;
  • FUSE (File system in Userspace);
  • HFS file system;
  • HFS+ file system;
  • Journaling layer for block devices (JBD2);
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • NTFS3 file system;
  • OCFS2 file system;
  • OrangeFS file system;
  • Proc file system;
  • SMB network file system;
  • UDF file system;
  • XFS file system;
  • Software nodes and device properties;
  • Glob pattern matching library;
  • Netfilter;
  • Socket messages infrastructure;
  • Network sockets;
  • Memory Management;
  • Network traffic control;
  • IPv6 networking;
  • Bluetooth subsystem;
  • Networking core;
  • IP tunnels definitions;
  • IPv4 networking;
  • SCTP protocol;
  • XFRM subsystem;
  • io_uring subsystem;
  • IPC subsystem;
  • Audit subsystem;
  • BPF subsystem;
  • Control group (cgroup);
  • Kernel CPU control infrastructure;
  • Kernel exit() syscall;
  • Kernel futex primitives;
  • Scheduler infrastructure;
  • Signal handling mechanism;
  • Timer subsystem;
  • Tracing infrastructure;
  • Cryptographic library;
  • Debug objects infrastructure;
  • Resizable hashtable library;
  • Memory management;
  • 6LoWPAN network protocol;
  • IEEE 802 network protocols;
  • 9P file system network protocol;
  • Asynchronous Transfer Mode (ATM) subsystem;
  • B.A.T.M.A.N. meshing protocol;
  • Ethernet bridge;
  • CAN network layer;
  • Ceph Core library;
  • HSR network protocol;
  • IEEE802154.4 network protocol;
  • IFE protocol;
  • IUCV driver;
  • KCM (Kernel Connection Multiplexor) sockets driver;
  • Logical Link layer;
  • MAC80211 subsystem;
  • IEEE 802.15.4 subsystem;
  • Management Component Transport Protocol (MCTP);
  • MultiProtocol Label Switching driver;
  • NetLabel subsystem;
  • Open vSwitch;
  • Packet sockets;
  • Phonet protocol;
  • Packet sampling (psample);
  • Qualcomm IPC Router (QRTR);
  • RDS protocol;
  • SMC sockets;
  • Sun RPC protocol;
  • TIPC protocol;
  • TLS protocol;
  • Unix domain sockets;
  • VMware vSockets driver;
  • Wireless networking;
  • X.25 network layer;
  • AppArmor security module;
  • Integrity Measurement Architecture(IMA) framework;
  • Key management;
  • Apple Onboard Audio ALSA driver;
  • ALSA framework;
  • Generic PCM loopback sound driver;
  • FireWire sound drivers;
  • ESS Solo-1 ALSA driver;
  • HD-audio driver;
  • SoC Audio for Freescale CPUs drivers;
  • NVIDIA Tegra ASoC drivers;
  • USB sound devices;
  • Perf tools;
  • KVM subsystem

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
22.04 LTS jammy linux-image-5.15.0-1122-azure-fde –  5.15.0-1122.131
linux-image-azure-fde-5.15 –  5.15.0.1122.131
linux-image-azure-fde-lts-22.04 –  5.15.0.1122.131

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References

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