CVE-2022-50418
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-18

Last updated on: 2025-12-12

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: mhi: fix potential memory leak in ath11k_mhi_register() mhi_alloc_controller() allocates a memory space for mhi_ctrl. When gets some error, mhi_ctrl should be freed with mhi_free_controller(). But when ath11k_mhi_read_addr_from_dt() fails, the function returns without calling mhi_free_controller(), which will lead to a memory leak. We can fix it by calling mhi_free_controller() when ath11k_mhi_read_addr_from_dt() fails.
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Meta Information
Published
2025-09-18
Last Modified
2025-12-12
Generated
2026-06-16
AI Q&A
2025-09-18
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50418
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.6 (inc) to 5.19.17 (exc)
linux linux_kernel From 6.0 (inc) to 6.0.3 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is a potential memory leak in the Linux kernel's ath11k wireless driver. Specifically, when the function ath11k_mhi_read_addr_from_dt() fails, it does not free allocated memory (mhi_ctrl), leading to a memory leak. The issue arises because mhi_alloc_controller() allocates memory, but if an error occurs, the allocated memory should be freed by mhi_free_controller(), which was not done in this failure case.

Impact Analysis

The memory leak caused by this vulnerability can lead to increased memory usage over time, potentially degrading system performance or causing system instability if the leak is significant and persistent.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version where the fix for the memory leak in ath11k_mhi_register() is applied. This fix ensures that mhi_free_controller() is called properly when ath11k_mhi_read_addr_from_dt() fails, preventing the memory leak.

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