Ubuntu Security Notices
USN-6921-1

USN-6921-1: Linux kernel vulnerabilities

Publication date

29 July 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

24.04 LTS

Packages

linux - Linux kernel
linux-aws - Linux kernel for Amazon Web Services (AWS) systems
linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
linux-gke - Linux kernel for Google Container Engine (GKE) systems
linux-ibm - Linux kernel for IBM cloud systems
linux-nvidia - Linux kernel for NVIDIA systems
linux-oem-6.8 - Linux kernel for OEM systems
linux-raspi - Linux kernel for Raspberry Pi systems

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:

DMA engine subsystem;
HID subsystem;
I2C subsystem;
PHY drivers;
TTY drivers;
IPv4 networking

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:

DMA engine subsystem;
HID subsystem;
I2C subsystem;
PHY drivers;
TTY drivers;
IPv4 networking

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-6.8.0-1007-gke – 6.8.0-1007.10
	linux-image-6.8.0-1008-raspi – 6.8.0-1008.8
	linux-image-6.8.0-1009-ibm – 6.8.0-1009.9
	linux-image-6.8.0-1009-oem – 6.8.0-1009.9
	linux-image-6.8.0-1010-nvidia – 6.8.0-1010.10
	linux-image-6.8.0-1010-nvidia-64k – 6.8.0-1010.10
	linux-image-6.8.0-1011-gcp – 6.8.0-1011.12
	linux-image-6.8.0-1012-aws – 6.8.0-1012.13
	linux-image-6.8.0-39-generic – 6.8.0-39.39
	linux-image-6.8.0-39-generic-64k – 6.8.0-39.39
	linux-image-aws – 6.8.0-1012.13
	linux-image-gcp – 6.8.0-1011.12
	linux-image-generic – 6.8.0-39.39
	linux-image-generic-64k – 6.8.0-39.39
	linux-image-generic-64k-hwe-24.04 – 6.8.0-39.39
	linux-image-generic-hwe-24.04 – 6.8.0-39.39
	linux-image-generic-lpae – 6.8.0-39.39
	linux-image-gke – 6.8.0-1007.10
	linux-image-ibm – 6.8.0-1009.9
	linux-image-ibm-classic – 6.8.0-1009.9
	linux-image-ibm-lts-24.04 – 6.8.0-1009.9
	linux-image-kvm – 6.8.0-39.39
	linux-image-nvidia – 6.8.0-1010.10
	linux-image-nvidia-64k – 6.8.0-1010.10
	linux-image-oem-24.04 – 6.8.0-1009.9
	linux-image-oem-24.04a – 6.8.0-1009.9
	linux-image-raspi – 6.8.0-1008.8
	linux-image-virtual – 6.8.0-39.39
	linux-image-virtual-hwe-24.04 – 6.8.0-39.39

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References

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