CVE-2022-50758
Unknown Unknown - Not Provided
Memory Leak in Linux Kernel vt6655 Driver Fixed

Publication date: 2025-12-24

Last updated on: 2025-12-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: staging: vt6655: fix potential memory leak In function device_init_td0_ring, memory is allocated for member td_info of priv->apTD0Rings[i], with i increasing from 0. In case of allocation failure, the memory is freed in reversed order, with i decreasing to 0. However, the case i=0 is left out and thus memory is leaked. Modify the memory freeing loop to include the case i=0.
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Meta Information
Published
2025-12-24
Last Modified
2025-12-24
Generated
2026-06-16
AI Q&A
2025-12-25
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50758
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux kernel *
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Mitigation Strategies

The vulnerability is fixed by modifying the memory freeing loop in the Linux kernel's vt6655 staging driver to include the case i=0, preventing a memory leak. To mitigate this vulnerability, you should update your Linux kernel to a version that includes this fix.

Executive Summary

This vulnerability is a potential memory leak in the Linux kernel's vt6655 driver. Specifically, in the function device_init_td0_ring, memory is allocated for a member td_info in an array. If memory allocation fails partway through, the code attempts to free previously allocated memory in reverse order, but it omits freeing the memory when the index is 0. This omission causes a memory leak. The fix modifies the memory freeing loop to include the case when the index is 0, preventing the leak.

Impact Analysis

This vulnerability can cause a memory leak in the Linux kernel when using the vt6655 driver. Over time, this leak could lead to increased memory usage, potentially degrading system performance or causing instability if the leaked memory accumulates significantly.

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