CVE-2022-50758
Memory Leak in Linux Kernel vt6655 Driver Fixed
Publication date: 2025-12-24
Last updated on: 2025-12-24
Assigner: kernel.org
Description
Description
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | kernel | * |
| linux | linux_kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
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.
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.