Kevin Easton 7d970250cb af_key: Always verify length of provided sadb_key ... commit 4b66af2d63 upstream. Key extensions (struct sadb_key) include a user-specified number of key bits. The kernel uses that number to determine how much key data to copy out of the message in pfkey_msg2xfrm_state(). The length of the sadb_key message must be verified to be long enough, even in the case of SADB_X_AALG_NULL. Furthermore, the sadb_key_len value must be long enough to include both the key data and the struct sadb_key itself. Introduce a helper function verify_key_len(), and call it from parse_exthdrs() where other exthdr types are similarly checked for correctness. Signed-off-by: Kevin Easton <kevin@guarana.org> Reported-by: syzbot+5022a34ca5a3d49b84223653fab632dfb7b4cf37@syzkaller.appspotmail.com Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Cc: Zubin Mithra <zsm@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-06-16 09:45:14 +02:00
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af_key.c	af_key: Always verify length of provided sadb_key	2018-06-16 09:45:14 +02:00
Makefile