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Vulnerability DatabaseCVE-2022-49818
CVE-2022-49818:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2022-49818 is a vulnerability discovered in the Linux kernel, specifically related to the misuse of putdevice() function in mISDNregister_device(). The vulnerability was disclosed on May 1, 2025, affecting the mISDN (modular ISDN) subsystem of the Linux kernel (NVD, Wiz).
Technical details
The vulnerability stems from an incorrect sequence of device management operations in the mISDN subsystem of the Linux kernel. Specifically, the issue occurs when the putdevice() function is called prematurely before deviceinitialize(), which can lead to improper device reference handling. The vulnerability has been assigned a CVSS v3.1 Base Score of 5.5, indicating moderate severity (Red Hat).
Impact
The improper handling of device references could potentially lead to system instability or crashes in systems using the mISDN subsystem (Wiz).
Mitigation and workarounds
The vulnerability has been resolved in the Linux kernel through a patch that corrects the sequence of device management operations in mISDNregisterdevice(). The fix ensures that deviceinitialize() is called before putdevice() (Wiz).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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