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sctp: fix overrun in sctp_diag_dump_one()

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The function sctp_diag_dump_one() currently performs a memcpy()
of 64 bytes from a 16 byte field into another 16 byte field. Fix
by using correct size, use sizeof to obtain correct size instead
of using a hard-coded constant.

Fixes: 8f840e47f1 ("sctp: add the sctp_diag.c file")
Signed-off-by: Lance Richardson <[email protected]>
Reviewed-by: Xin Long <[email protected]>
Acked-by: Marcelo Ricardo Leitner <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Lance Richardson 2016-08-23 11:40:52 -04:00 • committed by David S. Miller
commit 232cb53a45
1 changed files with 4 additions and 2 deletions
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6
net/sctp/sctp_diag.c
View file

@ -424,11 +424,13 @@ static int sctp_diag_dump_one(struct sk_buff *in_skb,
paddr.v4.sin_family = AF_INET;
} else {
laddr.v6.sin6_port = req->id.idiag_sport;
memcpy(&laddr.v6.sin6_addr, req->id.idiag_src, 64);
memcpy(&laddr.v6.sin6_addr, req->id.idiag_src,
sizeof(laddr.v6.sin6_addr));
laddr.v6.sin6_family = AF_INET6;
paddr.v6.sin6_port = req->id.idiag_dport;
memcpy(&paddr.v6.sin6_addr, req->id.idiag_dst, 64);
memcpy(&paddr.v6.sin6_addr, req->id.idiag_dst,
sizeof(paddr.v6.sin6_addr));
paddr.v6.sin6_family = AF_INET6;
}