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Vulnerability DatabaseCVE-2022-50046
CVE-2022-50046:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2022-50046 affects the Linux kernel, specifically related to a potential memory leak in the net/sunrpc subsystem. The vulnerability was discovered in the rpcsysfsxprtstatechange() function where improper error handling can lead to memory leaks and potential NULL-dereferencing issues (NVD, Wiz).
Technical details
The vulnerability occurs in the rpcsysfsxprtstatechange() function when it fails to grab the object xprt. In this case, it returns 0 without decreasing the reference count of another object xps, which was previously increased by rpcsysfsxprtkobjgetxprtswitch(). Additionally, the function fails to validate whether xps is valid before use, potentially leading to NULL-dereferencing issues (NVD).
Impact
This vulnerability can result in two main issues: memory leaks due to improper reference counting, and potential NULL-dereferencing problems which could affect system stability (NVD).
Mitigation and workarounds
The issue has been resolved by adding proper error handling code when either xprt or xps is NULL. The fix ensures proper reference counting and validation of objects before use (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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