PR: 2743

Reported by: Dmitry Belyavsky <beldmit@gmail.com>

Fix memory leak if invalid GOST MAC key given.

diff --git a/engines/ccgost/gost_pmeth.c b/engines/ccgost/gost_pmeth.c
index 4a05853e55e956f3bc504afb1a534d3968e86c5e..0bd08e93010018eda42cb1450d786af83451879b 100644 (file)
--- a/engines/ccgost/gost_pmeth.c
+++ b/engines/ccgost/gost_pmeth.c
@@ -521,6 +521,7 @@ static int pkey_gost_mac_ctrl_str(EVP_PKEY_CTX *ctx,
                                {
                                GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
                                        GOST_R_INVALID_MAC_KEY_LENGTH);
                                {
                                GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
                                        GOST_R_INVALID_MAC_KEY_LENGTH);

+                               OPENSSL_free(keybuf);

                                return 0;       
                                }
                        ret= pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
                                return 0;       
                                }
                        ret= pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,