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Vulnerability DatabaseCVE-2022-49982
CVE-2022-49982:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2022-49982 affects the Linux kernel and involves a memory leak vulnerability in the pvrusb2 driver. The issue was discovered in the pvrprobe function where the error handling code in pvr2hdw_create fails to unregister the v4l2 device. The vulnerability was published on June 18, 2025 (NVD).
Technical details
The vulnerability stems from improper error handling in pvr2hdwcreate where it fails to unregister the v4l2 device. When pvr2hdwcreate returns back to pvr2contextcreate, it calls pvr2contextdestroy to destroy the context, but mp->hdw is NULL, which leads to pvr2hdwdestroy directly returning. This implementation flaw results in a memory leak due to improper cleanup of resources (Wiz).
Impact
The memory leak in the pvrusb2 driver could lead to resource exhaustion over time as system memory is not properly freed when errors occur during device probing (Wiz).
Mitigation and workarounds
The vulnerability has been fixed by adding v4l2deviceunregister to properly decrease the refcount of the USB interface during error handling. Users should update to a patched version of the Linux kernel that includes this fix (Wiz).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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