Overflow Vulnerability in Linux Kernel's DAMON Module
Summary
DEBIAN-CVE-2024-50270: In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: avoid overflow in damon_feed_loop_next_input() damon_feed_loop_next_input() is inefficient and fragile to overflows. Affects linux versions < 6.11.9-1. Fixed in 6.11.9-1. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Linux kernel is a core component of many operating systems, providing essential services for hardware management, process scheduling, and system calls. The DAMON (Data Access Monitoring) module is designed to monitor data access patterns to optimize performance. However, it has been identified that the damon_feed_loop_next_input() function is susceptible to overflow issues, which can lead to inefficient processing and potential system instability.
Vulnerability Detail
In the Linux kernel, the damon_feed_loop_next_input() function has a vulnerability that can lead to integer overflow. This occurs during the calculation of 'score_goal_diff_bp' when the 'score' variable is high. The overflow can result in incorrect calculations, making the function fragile and inefficient. Additionally, the calculation of 'compensation' is also prone to overflow. These vulnerabilities can lead to unexpected behavior in the DAMON module, potentially affecting system performance and stability.
How To Fix
Minimum fixed version
6.11.9-1
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
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to apply the patch as soon as it is available.
Conclusion
The overflow vulnerability in the Linux kernel's DAMON module poses a risk to system performance and stability. Users are encouraged to update to the patched version to mitigate this risk. Regular monitoring using tools like Vulert can help in identifying and managing such vulnerabilities effectively.
See every vulnerability recorded for linux →
FAQ
The vulnerability is an integer overflow issue in the damon_feed_loop_next_input() function of the Linux kernel's DAMON module.
If exploited, this vulnerability can lead to inefficient processing and may affect system performance and stability.
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.
Yes, a patch is available in version 6.11.9-1 of the Linux package for both Debian 13 and 14.
While there are no specific workarounds, it is advisable to monitor your system closely and apply the patch as soon as possible.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
