1. Ubuntu Security Notices
  2. USN-7605-1

USN-7605-1: Linux kernel vulnerabilities

Publication date

30 June 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

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;
  • PowerPC architecture;
  • x86 architecture;
  • Compute Acceleration Framework;
  • ACPI drivers;
  • Ublk userspace block driver;
  • Compressed RAM block device driver;
  • Bus devices;
  • AMD CDX bus driver;
  • Clock framework and drivers;
  • DMA engine subsystem;
  • DPLL subsystem;
  • Qualcomm firmware drivers;
  • GPIO subsystem;
  • GPU drivers;
  • HID...

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;
  • PowerPC architecture;
  • x86 architecture;
  • Compute Acceleration Framework;
  • ACPI drivers;
  • Ublk userspace block driver;
  • Compressed RAM block device driver;
  • Bus devices;
  • AMD CDX bus driver;
  • Clock framework and drivers;
  • DMA engine subsystem;
  • DPLL subsystem;
  • Qualcomm firmware drivers;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • IIO subsystem;
  • InfiniBand drivers;
  • Multiple devices driver;
  • Media drivers;
  • MemoryStick subsystem;
  • Network drivers;
  • Mellanox network drivers;
  • NTB driver;
  • NVME drivers;
  • PCI subsystem;
  • Pin controllers subsystem;
  • RapidIO drivers;
  • Voltage and Current Regulator drivers;
  • Remote Processor subsystem;
  • SCSI subsystem;
  • SLIMbus drivers;
  • QCOM SoC drivers;
  • VideoCore services drivers;
  • Thermal drivers;
  • USB DSL drivers;
  • USB Host Controller drivers;
  • Renesas USBHS Controller drivers;
  • USB Type-C Connector System Software Interface driver;
  • Virtio Host (VHOST) subsystem;
  • Framebuffer layer;
  • ACRN Hypervisor Service Module driver;
  • W1 Dallas's 1-wire bus driver;
  • 9P distributed file system;
  • File systems infrastructure;
  • Ext4 file system;
  • JFS file system;
  • Network file systems library;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NTFS3 file system;
  • Proc file system;
  • SMB network file system;
  • Memory Management;
  • Key Management;
  • Memory management;
  • Scheduler infrastructure;
  • UProbes tracing;
  • RDMA verbs API;
  • SoC audio core drivers;
  • BPF subsystem;
  • Perf events;
  • Kernel fork() syscall;
  • Tracing infrastructure;
  • Watch queue notification mechanism;
  • 802.1Q VLAN protocol;
  • Asynchronous Transfer Mode (ATM) subsystem;
  • Bluetooth subsystem;
  • Networking core;
  • Devlink API;
  • IPv4 networking;
  • IPv6 networking;
  • Logical Link layer;
  • Management Component Transport Protocol (MCTP);
  • Netfilter;
  • Network traffic control;
  • SCTP protocol;
  • Switch device API;
  • Wireless networking;
  • eXpress Data Path;
  • Key management;
  • ALSA framework;
  • SoC Audio for Freescale CPUs drivers

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
24.10 oracular linux-image-6.11.0-1011-realtime –  6.11.0-1011.11
linux-image-6.11.0-1014-raspi –  6.11.0-1014.14
linux-image-6.11.0-1015-aws –  6.11.0-1015.16
linux-image-6.11.0-1016-gcp –  6.11.0-1016.16
linux-image-6.11.0-1016-gcp-64k –  6.11.0-1016.16
linux-image-6.11.0-1017-oracle –  6.11.0-1017.18
linux-image-6.11.0-1017-oracle-64k –  6.11.0-1017.18
linux-image-6.11.0-28-generic –  6.11.0-28.28
linux-image-6.11.0-28-generic-64k –  6.11.0-28.28
linux-image-aws –  6.11.0-1015.16
linux-image-gcp –  6.11.0-1016.16
linux-image-gcp-64k –  6.11.0-1016.16
linux-image-generic –  6.11.0-28.28
linux-image-generic-64k –  6.11.0-28.28
linux-image-oracle –  6.11.0-1017.18
linux-image-oracle-64k –  6.11.0-1017.18
linux-image-raspi –  6.11.0-1014.14
linux-image-realtime –  6.11.0-1011.11
linux-image-virtual –  6.11.0-28.28
24.04 noble linux-image-6.11.0-1016-gcp –  6.11.0-1016.16~24.04.1
linux-image-6.11.0-1016-gcp-64k –  6.11.0-1016.16~24.04.1
linux-image-6.11.0-28-generic –  6.11.0-28.28~24.04.1
linux-image-6.11.0-28-generic-64k –  6.11.0-28.28~24.04.1
linux-image-gcp –  6.11.0-1016.16~24.04.1
linux-image-gcp-64k –  6.11.0-1016.16~24.04.1
linux-image-generic-64k-hwe-24.04 –  6.11.0-28.28~24.04.1
linux-image-generic-hwe-24.04 –  6.11.0-28.28~24.04.1
linux-image-virtual-hwe-24.04 –  6.11.0-28.28~24.04.1

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References

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