Memory Management Vulnerability in Linux Kernel's WiFi Driver by Broadcom

CVE-2026-31661

What is CVE-2026-31661?

A vulnerability exists in the memory management logic of the WiFi driver within the Linux kernel, specifically related to the brcmsmac driver. The issue arises from the handling of DMA memory allocation which could lead to discrepancies between the size allocated and the size freed, potentially allowing for memory mismanagement. Proper alignment of memory sizes during allocation ensures that the allocated and freed memory sizes match, mitigating risks associated with improper memory handling and ensuring system stability.

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