1. Ubuntu Security Notices
  2. USN-6952-1

USN-6952-1: Linux kernel vulnerabilities

Publication date

9 August 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

Benedict Schlüter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde
discovered that an untrusted hypervisor could inject malicious #VC
interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw
is known as WeSee. A local attacker in control of the hypervisor could use
this to expose sensitive information or possibly execute arbitrary code in
the trusted execution environment. (CVE-2024-25742)

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;
  • M68K architecture;
  • OpenRISC architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Accessibility subsystem;
  • Bluetooth drivers;
  • Clock...

Benedict Schlüter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde
discovered that an untrusted hypervisor could inject malicious #VC
interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw
is known as WeSee. A local attacker in control of the hypervisor could use
this to expose sensitive information or possibly execute arbitrary code in
the trusted execution environment. (CVE-2024-25742)

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;
  • M68K architecture;
  • OpenRISC architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Accessibility subsystem;
  • Bluetooth drivers;
  • Clock framework and drivers;
  • CPU frequency scaling framework;
  • Hardware crypto device drivers;
  • DMA engine subsystem;
  • DPLL subsystem;
  • FireWire subsystem;
  • EFI core;
  • Qualcomm firmware drivers;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • Microsoft Hyper-V drivers;
  • I2C subsystem;
  • InfiniBand drivers;
  • IOMMU subsystem;
  • IRQ chip drivers;
  • Macintosh device drivers;
  • Multiple devices driver;
  • Media drivers;
  • EEPROM drivers;
  • MMC subsystem;
  • Network drivers;
  • STMicroelectronics network drivers;
  • Device tree and open firmware driver;
  • HiSilicon SoC PMU drivers;
  • PHY drivers;
  • Pin controllers subsystem;
  • Remote Processor subsystem;
  • S/390 drivers;
  • SCSI drivers;
  • SPI subsystem;
  • Media staging drivers;
  • Thermal drivers;
  • TTY drivers;
  • Userspace I/O drivers;
  • USB subsystem;
  • DesignWare USB3 driver;
  • ACRN Hypervisor Service Module driver;
  • Virtio drivers;
  • 9P distributed file system;
  • BTRFS file system;
  • eCrypt file system;
  • EROFS file system;
  • File systems infrastructure;
  • GFS2 file system;
  • JFFS2 file system;
  • Network file systems library;
  • Network file system client;
  • Network file system server daemon;
  • NILFS2 file system;
  • Proc file system;
  • SMB network file system;
  • Tracing file system;
  • Mellanox drivers;
  • Memory management;
  • Socket messages infrastructure;
  • Slab allocator;
  • Tracing infrastructure;
  • User-space API (UAPI);
  • Core kernel;
  • BPF subsystem;
  • DMA mapping infrastructure;
  • RCU subsystem;
  • Dynamic debug library;
  • KUnit library;
  • Maple Tree data structure library;
  • Heterogeneous memory management;
  • Amateur Radio drivers;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • Networking core;
  • IPv4 networking;
  • IPv6 networking;
  • Multipath TCP;
  • Netfilter;
  • NET/ROM layer;
  • NFC subsystem;
  • NSH protocol;
  • Open vSwitch;
  • Phonet protocol;
  • SMC sockets;
  • TIPC protocol;
  • Unix domain sockets;
  • Wireless networking;
  • Key management;
  • ALSA framework;
  • HD-audio driver;
  • Kirkwood ASoC drivers;
  • MediaTek ASoC 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
24.04 noble linux-image-6.8.0-1010-oracle –  6.8.0-1010.10
linux-image-6.8.0-1010-oracle-64k –  6.8.0-1010.10
linux-image-6.8.0-1011-nvidia-lowlatency –  6.8.0-1011.11.1
linux-image-6.8.0-1011-nvidia-lowlatency-64k –  6.8.0-1011.11.1
linux-image-nvidia-lowlatency –  6.8.0-1011.11.1
linux-image-nvidia-lowlatency-64k –  6.8.0-1011.11.1
linux-image-oracle –  6.8.0-1010.10
linux-image-oracle-64k –  6.8.0-1010.10

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References

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