e54647920b
key_msg2sp() is used for parsing data from setsockopt(IP[V6]_IPSEC_POLICY) call. This socket option is usually used to configure IPsec bypass for socket. Only privileged user can set this socket option. The message syntax is described here http://www.kame.net/newsletter/20021210/ and our libipsec is usually used to create the correct request. Add additional checks: * that sadb_x_ipsecrequest_len is not out of bounds of user supplied buffer * that src/dst's sa_len is the same * that 2*sa_len is not out of bounds of user supplied buffer * that 2*sa_len fits into bounds of sadb_x_ipsecrequest Reported by: Ilja van Sprundel MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D11796
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