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-rw-r--r--ssl/s3_pkt.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/ssl/s3_pkt.c b/ssl/s3_pkt.c
index 44c7c143fe7e9..72853a2e728fd 100644
--- a/ssl/s3_pkt.c
+++ b/ssl/s3_pkt.c
@@ -1225,6 +1225,13 @@ int ssl3_do_change_cipher_spec(SSL *s)
if (s->s3->tmp.key_block == NULL)
{
+ if (s->session == NULL)
+ {
+ /* might happen if dtls1_read_bytes() calls this */
+ SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC,SSL_R_CCS_RECEIVED_EARLY);
+ return (0);
+ }
+
s->session->cipher=s->s3->tmp.new_cipher;
if (!s->method->ssl3_enc->setup_key_block(s)) return(0);
}