In the Linux kernel, the following vulnerability has been resolved:

net: mvpp2: refill RX buffers before XDP or skb use

The RX error path returns the current descriptor buffer to the hardware
BM pool. That is only valid while the driver still owns the buffer.

mvpp2_rx_refill() can fail after the current buffer has been handed to
XDP or attached to an skb. In those cases mvpp2_run_xdp() may have
recycled, redirected, or queued the page for XDP_TX, and an skb free also
retires the data buffer. Returning such a buffer to BM lets hardware DMA
into memory that is no longer owned by the RX ring.

Refill the BM pool before handing the current buffer to XDP or to the
skb. If the allocation fails there, drop the packet and return the
still-owned current buffer to BM, preserving the pool depth. Once the
refill succeeds, later local drops retire/free the current buffer instead
of returning it to BM.

https://git.kernel.org/stable/c/02e1b5c4d3b4c658b72c145427cded1bba613fc1

https://git.kernel.org/stable/c/580f92f27cb8724bcc4be98ee89890eab524a2ae

https://git.kernel.org/stable/c/5e8e2a9624df72fca7c736b2966b2cbf6c9c3ff6

https://git.kernel.org/stable/c/8a2126c5afe89f8ceeb60a3afb9f075b736194cd

https://git.kernel.org/stable/c/a03cdcedb2cbcc42551dc3e4746929e93c5352d5

https://git.kernel.org/stable/c/a88b3293b556f4d8fba11db9a8061a6b0d3b69e6

https://git.kernel.org/stable/c/d0c8c4fbd22d260fe28530260656c5fb3c20ce84

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