net: sctp: sctp_endpoint_free: zero out secret key data
On sctp_endpoint_destroy, previously used sensitive keying material should be zeroed out before the memory is returned, as we already do with e.g. auth keys when released. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -249,6 +249,8 @@ void sctp_endpoint_free(struct sctp_endpoint *ep)
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/* Final destructor for endpoint. */
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static void sctp_endpoint_destroy(struct sctp_endpoint *ep)
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{
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int i;
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SCTP_ASSERT(ep->base.dead, "Endpoint is not dead", return);
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/* Free up the HMAC transform. */
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@ -271,6 +273,9 @@ static void sctp_endpoint_destroy(struct sctp_endpoint *ep)
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sctp_inq_free(&ep->base.inqueue);
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sctp_bind_addr_free(&ep->base.bind_addr);
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for (i = 0; i < SCTP_HOW_MANY_SECRETS; ++i)
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memset(&ep->secret_key[i], 0, SCTP_SECRET_SIZE);
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/* Remove and free the port */
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if (sctp_sk(ep->base.sk)->bind_hash)
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sctp_put_port(ep->base.sk);
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