On Tue, Aug 23, 2016 at 11:40 PM, Lance Richardson <lrichard@xxxxxxxxxx> wrote:
> 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: 8f840e47f190 ("sctp: add the sctp_diag.c file")
> Signed-off-by: Lance Richardson <lrichard@xxxxxxxxxx>
> ---
> net/sctp/sctp_diag.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/net/sctp/sctp_diag.c b/net/sctp/sctp_diag.c
> index bb69153..f3508aa 100644
> --- a/net/sctp/sctp_diag.c
> +++ b/net/sctp/sctp_diag.c
> @@ -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;
> }
>
> --
> 2.5.5
>
Reviewed-by: Xin Long <lucien.xin@xxxxxxxxx>
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