Vulnerability in Kernel: mmmremap.c
Summary
GSD-2022-1001004: mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0). Affects Kernel versions < 04bc13dae4a27b8d030843c85ae452bb2f1d9c1f. No fix is published. 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 Kernel is a fundamental component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities such as process management, memory management, and device drivers. The vulnerability in question affects the mmmremap.c file within the Kernel. This file is responsible for handling memory remapping operations. The vulnerability specifically pertains to a scenario where the old size parameter is set to 0 during the mremap operation.
Vulnerability Detail
The vulnerability arises from an unnecessary invocation of the invalidate_range_start/end functions when the old size parameter is set to 0 during the mremap operation. This results in a performance overhead and potential resource wastage. While the impact and exploitability of this vulnerability have not been proven, it is crucial to address it to ensure optimal system performance and resource utilization.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no specific workaround provided for this vulnerability. However, applying the recommended fix by updating the Linux Kernel to the latest version will address the issue.
Conclusion
In conclusion, the vulnerability in the Kernel's mmmremap.c file can potentially lead to performance degradation and inefficient resource utilization. It is crucial to update the Linux Kernel to version v5.17.3 or later to address this vulnerability. Applying the recommended fix will ensure optimal system performance and resource management. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability is not yet proven. However, it can potentially lead to performance degradation and inefficient resource utilization.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities.
There is no known exploit for this vulnerability at the moment. However, it is still important to apply the recommended fix to ensure optimal system performance and resource utilization.
The recommended approach to mitigate this vulnerability is to update the Linux Kernel to the latest version. There is no specific workaround provided.
You can find more information about this vulnerability in the GSD-2022-1001004.json file available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1001xxx/GSD-2022-1001004.json
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
