CVE-2025-21744 wifi: brcmfmac: fix NULL pointer dereference in brcmf_txfinalize()

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: fix NULL pointer dereference in brcmftxfinalize On removal of the device or unloading of the kernel module a potential NULL pointer dereference occurs. The following sequence deletes the interface: brcmfdetach...