System Lockup Vulnerability in Linux Kernel Affecting Debian Packages
Summary
DEBIAN-CVE-2016-10723: An issue was discovered in the Linux kernel through 4.17.2. Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is the core component of the Debian operating system, responsible for managing hardware resources and providing essential services to applications. It is known for its stability, performance, and security features. However, certain vulnerabilities can arise, impacting its functionality. The vulnerability identified as CVE-2016-10723 affects various versions of the Linux package across multiple Debian releases, highlighting a critical issue in resource management.
Vulnerability Detail
An issue was discovered in the Linux kernel through version 4.17.2, where the page allocator does not yield CPU resources to the owner of the oom_lock mutex. This flaw allows a local unprivileged user to lock up the system indefinitely by consuming CPU resources from the page allocator, particularly during concurrent page fault events when the global Out Of Memory (OOM) killer is triggered. This can lead to a denial of service, rendering the system unresponsive.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, system administrators can limit the resource usage of unprivileged users or implement monitoring tools to detect and mitigate excessive resource consumption. Additionally, consider using control groups (cgroups) to manage and restrict resource allocation for processes.
Conclusion
The CVE-2016-10723 vulnerability in the Linux kernel poses a significant risk to Debian systems by allowing unprivileged users to lock up the system. It is crucial to apply the recommended updates and consider workarounds to safeguard against potential exploitation.
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FAQ
CVE-2016-10723 is a vulnerability in the Linux kernel that allows unprivileged users to lock up the system by consuming CPU resources.
The vulnerability affects Debian versions 11, 12, 13, and 14, specifically the Linux package.
You can use tools like Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
If exploited, this vulnerability can lead to a denial of service, making the system unresponsive and unusable.
Yes, a patch is available. You can update your Linux package to the latest version to mitigate the vulnerability.
References
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