Denial of Service Vulnerability in Linux Kernel - CVE-2013-4483
Summary
DEBIAN-CVE-2013-4483: The ipc_rcu_putref function in ipc/util.c in the Linux kernel before 3.10 does not properly manage a reference count, which allows local users to cause a denial of service (memory consumption or system crash) via a craft... Affects linux versions < 3.11.8-1. Fixed in 3.11.8-1. How to fix ↓
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Background
The Linux kernel is a core component of the operating system that manages hardware and system resources. It provides essential services for all other parts of the system, including memory management, process scheduling, and device control. The kernel is crucial for system stability and performance, and vulnerabilities within it can have severe implications for system security and reliability.
Vulnerability Detail
The ipc_rcu_putref function in ipc/util.c in the Linux kernel prior to version 3.10 does not properly manage a reference count. This oversight allows local users to exploit the vulnerability, potentially leading to a denial of service condition. The exploitation can result in excessive memory consumption or even a system crash, which can disrupt services and affect system availability.
How To Fix
Minimum fixed version
3.11.8-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, you may limit access to the affected functionality or restrict local user permissions until the package can be updated.
Conclusion
CVE-2013-4483 is a significant vulnerability in the Linux kernel that can lead to denial of service conditions. It is crucial for users to update their systems to the patched version to mitigate risks associated with this vulnerability. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
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FAQ
CVE-2013-4483 is a vulnerability in the Linux kernel that allows local users to cause a denial of service due to improper reference count management.
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.
The risks include potential memory consumption issues and system crashes, which can lead to service disruptions and affect system reliability.
Yes, the vulnerability is fixed in version 3.11.8-1 of the Linux package. It is recommended to update to this version or later.
If immediate updates are not possible, consider restricting access to the affected functionality or limiting local user permissions as a temporary measure.
References
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