# HG changeset patch
# User Matt Johnston <matt@ucc.asn.au>
# Date 1435067293 -28800
# Node ID a9e074b78cd5caab6b41c2d6de22f859a0da7193
# Parent  b803ad2b9f4ccf8c13a2f63be211be8bda800d8b
check ecc key return, fix null pointer crash

diff -r b803ad2b9f4c -r a9e074b78cd5 common-kex.c
--- a/common-kex.c	Fri Jun 12 22:57:48 2015 +0800
+++ b/common-kex.c	Tue Jun 23 21:48:13 2015 +0800
@@ -703,6 +703,9 @@
 	ecc_key *Q_C, *Q_S, *Q_them;
 
 	Q_them = buf_get_ecc_raw_pubkey(pub_them, algo_kex->ecc_curve);
+	if (Q_them == NULL) {
+		dropbear_exit("ECC error");
+	}
 
 	ses.dh_K = dropbear_ecc_shared_secret(Q_them, &param->key);