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

net: mvpp2: limit XDP frame size to the RX buffer

mvpp2 has short and long BM pools, and short pool buffers can be smaller
than PAGE_SIZE. The XDP path nevertheless initializes every xdp_buff with
PAGE_SIZE as frame size.

XDP helpers use frame_sz to validate tail growth and to derive the hard
end of the data area. Advertising PAGE_SIZE for short buffers can let
bpf_xdp_adjust_tail() grow a packet past the real allocation, corrupting
memory or later tripping skb tailroom checks.

Initialize the XDP buffer with bm_pool->frag_size so XDP tailroom matches
the actual buffer backing the packet.

https://git.kernel.org/stable/c/3b8b0c3631b19faee53f0d15a49924129b063eec

https://git.kernel.org/stable/c/910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3e

https://git.kernel.org/stable/c/9545cc5ef18ca22d031f2f47c157192460652359

https://git.kernel.org/stable/c/994bd2b58d2bd08aa97ec0836cc813cfcb00d749

https://git.kernel.org/stable/c/a3ee9231ccec6ec3be2de89c56f897055fd9eab1

https://git.kernel.org/stable/c/ec8e1e5842bc0dbd4c272761f4db3651eecd0339

https://git.kernel.org/stable/c/f3c6aa078927e6fe8121c9c591ddee8716c5305a

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