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Vulnerability DatabaseCVE-2023-53665
CVE-2023-53665:
Linux Kernel vulnerability analysis and mitigation
Overview
In the Linux kernel, a vulnerability (CVE-2023-53665) has been identified where mddev should not be dereferenced after export_rdev(). Except for initial reference, mddev->kobject is referenced by rdev->kobject, and if the last rdev is freed, there is no guarantee that mddev is still valid (NVD).
Technical details
The vulnerability occurs in the Linux kernel's MD (Multiple Devices) driver. When the last rdev is freed, there's a potential invalid dereference of mddev after export_rdev() is called. This issue can be triggered by a test for mdadm that involves adding and removing devices through sysfs operations (NVD).
Impact
When triggered, this vulnerability can lead to a general protection fault in the kernel, potentially causing system crashes or denial of service conditions (NVD).
Mitigation and workarounds
The vulnerability has been resolved by implementing a fix that prevents dereferencing mddev after export_rdev() is called (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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