1. Ubuntu Security Notices
  2. USN-7008-1

USN-7008-1: Linux kernel vulnerabilities

Publication date

13 September 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

Chenyuan Yang discovered that the CEC driver driver in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2024-23848)

It was discovered that the JFS file system contained an out-of-bounds read
vulnerability when printing xattr debug information. A local attacker could
use this to cause a denial of service (system crash). (CVE-2024-40902)

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;
  • MIPS architecture;
  • PA-RISC architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • User-Mode Linux (UML);
  • x86 architecture;
  • Block...

Chenyuan Yang discovered that the CEC driver driver in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2024-23848)

It was discovered that the JFS file system contained an out-of-bounds read
vulnerability when printing xattr debug information. A local attacker could
use this to cause a denial of service (system crash). (CVE-2024-40902)

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;
  • MIPS architecture;
  • PA-RISC architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • User-Mode Linux (UML);
  • x86 architecture;
  • Block layer subsystem;
  • ACPI drivers;
  • Drivers core;
  • Null block device driver;
  • Character device driver;
  • TPM device driver;
  • Clock framework and drivers;
  • CPU frequency scaling framework;
  • Hardware crypto device drivers;
  • CXL (Compute Express Link) drivers;
  • Buffer Sharing and Synchronization framework;
  • DMA engine subsystem;
  • EFI core;
  • FPGA Framework;
  • GPU drivers;
  • Greybus drivers;
  • HID subsystem;
  • HW tracing;
  • I2C subsystem;
  • IIO subsystem;
  • InfiniBand drivers;
  • Input Device (Mouse) drivers;
  • Mailbox framework;
  • Media drivers;
  • Microchip PCI driver;
  • VMware VMCI Driver;
  • MMC subsystem;
  • Network drivers;
  • PCI subsystem;
  • x86 platform drivers;
  • PTP clock framework;
  • S/390 drivers;
  • SCSI drivers;
  • SoundWire subsystem;
  • Sonic Silicon Backplane drivers;
  • Greybus lights staging drivers;
  • Thermal drivers;
  • TTY drivers;
  • USB subsystem;
  • VFIO drivers;
  • Framebuffer layer;
  • Watchdog drivers;
  • 9P distributed file system;
  • BTRFS file system;
  • File systems infrastructure;
  • Ext4 file system;
  • F2FS file system;
  • JFS file system;
  • Network file system server daemon;
  • NILFS2 file system;
  • NTFS3 file system;
  • SMB network file system;
  • Tracing file system;
  • IOMMU subsystem;
  • Tracing infrastructure;
  • io_uring subsystem;
  • Core kernel;
  • BPF subsystem;
  • Kernel debugger infrastructure;
  • DMA mapping infrastructure;
  • IRQ subsystem;
  • Memory management;
  • 9P file system network protocol;
  • Amateur Radio drivers;
  • B.A.T.M.A.N. meshing protocol;
  • Ethernet bridge;
  • Networking core;
  • Ethtool driver;
  • IPv4 networking;
  • IPv6 networking;
  • MAC80211 subsystem;
  • Multipath TCP;
  • Netfilter;
  • NET/ROM layer;
  • NFC subsystem;
  • Network traffic control;
  • Sun RPC protocol;
  • TIPC protocol;
  • TLS protocol;
  • Unix domain sockets;
  • Wireless networking;
  • XFRM subsystem;
  • AppArmor security module;
  • Integrity Measurement Architecture(IMA) framework;
  • Landlock security;
  • Linux Security Modules (LSM) Framework;
  • SELinux security module;
  • Simplified Mandatory Access Control Kernel framework;
  • ALSA framework;
  • HD-audio driver;
  • SOF 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
22.04 jammy linux-image-6.8.0-44-lowlatency –  6.8.0-44.44.1~22.04.1
linux-image-6.8.0-44-lowlatency-64k –  6.8.0-44.44.1~22.04.1
linux-image-lowlatency-64k-hwe-22.04 –  6.8.0-44.44.1~22.04.1
linux-image-lowlatency-hwe-22.04 –  6.8.0-44.44.1~22.04.1

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

id="usn"

Have additional questions?

Talk to a member of the team ›