1. Ubuntu Security Notices
  2. USN-7295-1

USN-7295-1: Linux kernel vulnerabilities

Publication date

26 February 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

Ye Zhang and Nicolas Wu discovered that the io_uring subsystem in the Linux
kernel did not properly handle locking for rings with IOPOLL, leading to a
double-free vulnerability. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2023-21400)

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:

  • ARM64 architecture;
  • Block layer subsystem;
  • ACPI drivers;
  • Drivers core;
  • ATA over ethernet (AOE) driver;
  • TPM device driver;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • I2C subsystem;
  • InfiniBand drivers;
  • Mailbox framework;
  • Multiple devices driver;
  • Media drivers;
  • Network drivers;
  • NTB...

Ye Zhang and Nicolas Wu discovered that the io_uring subsystem in the Linux
kernel did not properly handle locking for rings with IOPOLL, leading to a
double-free vulnerability. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2023-21400)

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:

  • ARM64 architecture;
  • Block layer subsystem;
  • ACPI drivers;
  • Drivers core;
  • ATA over ethernet (AOE) driver;
  • TPM device driver;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • I2C subsystem;
  • InfiniBand drivers;
  • Mailbox framework;
  • Multiple devices driver;
  • Media drivers;
  • Network drivers;
  • NTB driver;
  • Virtio pmem driver;
  • Parport drivers;
  • PCI subsystem;
  • SPI subsystem;
  • Direct Digital Synthesis drivers;
  • TTY drivers;
  • USB Device Class drivers;
  • USB Dual Role (OTG-ready) Controller drivers;
  • USB Serial drivers;
  • USB Type-C support driver;
  • Framebuffer layer;
  • BTRFS file system;
  • Ceph distributed 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;
  • NILFS2 file system;
  • SMB network file system;
  • Network traffic control;
  • Network sockets;
  • TCP network protocol;
  • BPF subsystem;
  • Perf events;
  • Arbitrary resource management;
  • Timer substystem drivers;
  • Tracing infrastructure;
  • Closures library;
  • Memory management;
  • Amateur Radio drivers;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • CAN network layer;
  • Networking core;
  • IPv4 networking;
  • IPv6 networking;
  • MAC80211 subsystem;
  • Netfilter;
  • Netlink;
  • SCTP protocol;
  • TIPC protocol;
  • VMware vSockets driver;
  • Wireless networking;
  • XFRM subsystem;
  • Key management;
  • FireWire sound drivers;
  • AudioScience HPI driver;
  • Amlogic Meson SoC drivers;
  • 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
20.04 focal linux-image-5.4.0-1058-xilinx-zynqmp –  5.4.0-1058.62
linux-image-xilinx-zynqmp –  5.4.0.1058.58

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References

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