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sctp: fix to check the source address of COOKIE-ECHO chunk

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SCTP does not check whether the source address of COOKIE-ECHO
chunk is the original address of INIT chunk or part of the any
address parameters saved in COOKIE in CLOSED state. So even if
the COOKIE-ECHO chunk is from any address but with correct COOKIE,
the COOKIE-ECHO chunk still be accepted. If the COOKIE is not from
a valid address, the assoc should not be established.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Yongjun
2011-04-19 21:30:51 +00:00
committed by David S. Miller
parent 85c5ed4e44
commit de6becdc08
4 changed files with 28 additions and 17 deletions
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2
include/net/sctp/structs.h
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@ -1400,7 +1400,7 @@ int sctp_has_association(const union sctp_addr *laddr,
int sctp_verify_init(const struct sctp_association *asoc, sctp_cid_t,
sctp_init_chunk_t *peer_init, struct sctp_chunk *chunk,
struct sctp_chunk **err_chunk);
int sctp_process_init(struct sctp_association *, sctp_cid_t cid,
int sctp_process_init(struct sctp_association *, struct sctp_chunk *chunk,
const union sctp_addr *peer,
sctp_init_chunk_t *init, gfp_t gfp);
__u32 sctp_generate_tag(const struct sctp_endpoint *);