Critical Vulnerabilities in Linux Kernel Packages: USN-6865-1
Summary
USN-6865-1: linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities. Affects linux-aws versions < 4.4.0-1133.139. Fixed in 4.4.0-1133.139. How to fix ↓
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Background
The Linux kernel is the core component of the Linux operating system, responsible for managing hardware resources and providing essential services to applications. It is widely used across various platforms, including servers, desktops, and embedded systems. The kernel's functionality includes process management, memory management, device drivers, and system calls. The recent vulnerabilities discovered in the Linux kernel packages, specifically in the versions related to linux, linux-aws, and linux-kvm, expose systems to potential denial of service attacks and arbitrary code execution.
Vulnerability Detail
The vulnerabilities stem from multiple sources within the Linux kernel, including improper validation in the ext4 file system, race conditions in the ATA over Ethernet driver, and insufficient mitigations for the Branch History Injection vulnerability on Intel processors. These issues could allow attackers to crash the system, execute arbitrary code, or expose sensitive information. The vulnerabilities are identified by CVE-2021-33631, CVE-2023-6270, CVE-2024-2201, CVE-2024-23307, CVE-2024-24861, and others, indicating a range of potential impacts from denial of service to system compromise.
How To Fix
Minimum fixed version
4.4.0-1133.139
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linux-awsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can avoid using the affected functionalities of the kernel until the update is applied. Additionally, consider disabling the ext4 file system or the ATA over Ethernet driver if they are not essential for your operations.
Conclusion
The vulnerabilities identified in the Linux kernel packages pose serious risks to system security and stability. Users are strongly advised to update their systems to the latest patched versions to mitigate these risks. Regular monitoring and prompt updates are essential for maintaining a secure environment.
See every vulnerability recorded for linux-aws →
FAQ
USN-6865-1 is a security notice issued for vulnerabilities found in the Linux kernel packages, detailing the risks and available patches.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without needing to sign up.
The vulnerabilities could lead to denial of service, arbitrary code execution, and exposure of sensitive information, posing significant risks to system integrity.
It is recommended to regularly check for updates and apply them promptly, especially when security vulnerabilities are disclosed.
If immediate updates are not possible, consider implementing workarounds such as disabling affected functionalities or using alternative configurations.
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