net: bcmasp: fix memory leak when bringing down interface

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: net: bcmasp: fix memory leak when bringing down interface When bringing down the TX rings we flush the rings but forget to reclaimed the flushed packets. This leads to a memory leak since we do not free the dma mapped buffers. This also leads to tx control block corruption when bringing down the interface for power management.

References

• https://git.kernel.org/stable/c/09040baf8779ad880e0e0d0ea10e57aa929ef3ab
• https://git.kernel.org/stable/c/2389ad1990163d29cba5480d693b4c2e31cc545c
• https://git.kernel.org/stable/c/9f898fc2c31fbf0ac5ecd289f528a716464cb005