Use-After-Free Vulnerability in Linux Kernel Affecting Broadcom Wireless Driver

CVE-2022-50408

What is CVE-2022-50408?

A use-after-free vulnerability exists in the Broadcom wireless driver (brcmfmac) within the Linux kernel. This flaw occurs during the data transmission process where the driver may attempt to access freed memory, leading to potential system instability or exploitation. The issue arises in the brcmf_netdev_start_xmit function, where certain conditions, such as task scheduling, can result in the driver attempting to read from an address that has already been freed, potentially affecting system performance and security.

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