In osmo-ggsn 1.14.0 an out of bounds write issue was found in the gtp_decode_pdp_ctx() function through the PDP context GSN-Address sub-field, leading to memory corruption.
https://cgit.osmocom.org/osmo-ggsn/commit/?id=6c322f4dd339401a437da3c89c95f2bf64bca995