1. Ubuntu Security Notices
  2. USN-7655-1

USN-7655-1: Linux kernel (Intel IoTG) vulnerabilities

Publication date

18 July 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

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)

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:

  • PA-RISC architecture;
  • PowerPC architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ACPI drivers;
  • Serial ATA and Parallel ATA...

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)

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:

  • PA-RISC architecture;
  • PowerPC architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ACPI drivers;
  • Serial ATA and Parallel ATA drivers;
  • Bluetooth drivers;
  • Bus devices;
  • Clock framework and drivers;
  • CPU frequency scaling framework;
  • Buffer Sharing and Synchronization framework;
  • DMA engine subsystem;
  • ARM SCMI message protocol;
  • GPU drivers;
  • HID subsystem;
  • HSI subsystem;
  • I2C subsystem;
  • I3C subsystem;
  • IIO subsystem;
  • InfiniBand drivers;
  • IOMMU subsystem;
  • IRQ chip drivers;
  • MCB driver;
  • Multiple devices driver;
  • Media drivers;
  • MemoryStick subsystem;
  • Multifunction device drivers;
  • PCI Endpoint Test driver;
  • MTD block device drivers;
  • Network drivers;
  • Mellanox network drivers;
  • NTB driver;
  • Device tree and open firmware driver;
  • PCI subsystem;
  • TI SCI PM domains driver;
  • PWM drivers;
  • Voltage and Current Regulator drivers;
  • Remote Processor subsystem;
  • S/390 drivers;
  • SCSI subsystem;
  • QCOM SoC drivers;
  • Samsung SoC drivers;
  • TCM subsystem;
  • Thermal drivers;
  • UFS subsystem;
  • Cadence USB3 driver;
  • ChipIdea USB driver;
  • USB Device Class drivers;
  • DesignWare USB3 driver;
  • USB Gadget drivers;
  • USB Type-C support driver;
  • USB Type-C Connector System Software Interface driver;
  • Backlight driver;
  • Framebuffer layer;
  • Xen hypervisor drivers;
  • BTRFS file system;
  • Ext4 file system;
  • F2FS file system;
  • File systems infrastructure;
  • JFS file system;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NTFS3 file system;
  • Proc file system;
  • SMB network file system;
  • Kernel stack handling interfaces;
  • Bluetooth subsystem;
  • IPv6 networking;
  • Network traffic control;
  • SCTP protocol;
  • RDMA verbs API;
  • SoC audio core drivers;
  • BPF subsystem;
  • Kernel command line parsing driver;
  • Tracing infrastructure;
  • Watch queue notification mechanism;
  • Memory management;
  • 802.1Q VLAN protocol;
  • Asynchronous Transfer Mode (ATM) subsystem;
  • Networking core;
  • IPv4 networking;
  • MAC80211 subsystem;
  • Management Component Transport Protocol (MCTP);
  • Multipath TCP;
  • Netfilter;
  • Open vSwitch;
  • Phonet protocol;
  • SMC sockets;
  • Sun RPC protocol;
  • TIPC protocol;
  • TLS protocol;
  • SoC Audio for Freescale CPUs drivers;
  • Virtio sound driver;
  • CPU Power monitoring 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
20.04 focal linux-image-5.15.0-1083-intel-iotg –  5.15.0-1083.89~20.04.1  
linux-image-intel –  5.15.0.1083.89~20.04.1  
linux-image-intel-iotg –  5.15.0.1083.89~20.04.1  
linux-image-intel-iotg-5.15 –  5.15.0.1083.89~20.04.1  

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References

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