Critical Volume Collision Vulnerability in Linux Kernel - CVE-2023-52982
Summary
CVE-2023-52982: In the Linux kernel, the following vulnerability has been resolved: fscache: Use wait_on_bit() to wait for the freeing of relinquished volume The freeing of relinquished volume will wake up the pending volume acquisition... Affects linux versions < 6.1.11-1. Fixed in 6.1.11-1. 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 the core component of many operating systems, providing essential services for hardware management, process scheduling, and system calls. It is widely used across various distributions, including Debian. The kernel's functionality is critical for system stability and performance. This vulnerability specifically affects the fscache subsystem, which is responsible for caching file system data to improve performance. The issue arises from a mismatch in wait-queue handling, leading to potential system hangs.
Vulnerability Detail
CVE-2023-52982 is a vulnerability in the Linux kernel's fscache subsystem. It occurs due to the improper use of wait queues when freeing relinquished volumes. The wake_up_bit() function is incorrectly paired with wait_var_event(), causing the waiter to hang indefinitely if the wake-up is delayed beyond 20 seconds. This can lead to significant system performance issues, as tasks may become blocked for extended periods, potentially affecting system usability and stability.
How To Fix
Minimum fixed version
6.1.11-1
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 provided for this vulnerability. The best course of action is to apply the patch as soon as it becomes available.
Conclusion
CVE-2023-52982 is a critical vulnerability in the Linux kernel that can lead to system hangs due to improper handling of wait queues in the fscache subsystem. Users are advised to update their systems to the patched version to mitigate the risk. Regular monitoring and timely updates are essential for maintaining system security.
See every vulnerability recorded for linux →
FAQ
CVE-2023-52982 is a vulnerability in the Linux kernel's fscache subsystem that can cause system hangs due to improper wait-queue handling.
This vulnerability can lead to tasks being blocked for extended periods, which may degrade system performance and usability.
If you are using Debian 12 or 13 with a Linux kernel version prior to 6.1.11-1, your system is affected by this vulnerability.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
While there are no specific workarounds, it is recommended to monitor your system for unusual behavior and apply the patch as soon as possible.
Related vulnerabilities
Recent vulnerabilities recorded for linux.
