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cryptodev_digest_update: don't leak original state->mac_data if realloc fails

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Signed-off-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
This commit is contained in:
Jonas Maebe 2013-12-08 17:18:17 +01:00 committed by Kurt Roeckx
parent 36f7ed5040
commit 349e6b2b0a
1 changed files with 4 additions and 2 deletions
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6
crypto/engine/eng_cryptodev.c
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@ -765,6 +765,7 @@ static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data,
struct crypt_op cryp;
struct dev_crypto_state *state = ctx->md_data;
struct session_op *sess = &state->d_sess;
char *new_mac_data;
if (!data || state->d_fd < 0) {
printf("cryptodev_digest_update: illegal inputs \n");
@ -777,12 +778,13 @@ static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data,
if (!(ctx->flags & EVP_MD_CTX_FLAG_ONESHOT)) {
/* if application doesn't support one buffer */
state->mac_data = OPENSSL_realloc(state->mac_data, state->mac_len + count);
new_mac_data = OPENSSL_realloc(state->mac_data, state->mac_len + count);
if (!state->mac_data) {
if (!new_mac_data) {
printf("cryptodev_digest_update: realloc failed\n");
return (0);
}
state->mac_data = new_mac_data;
memcpy(state->mac_data + state->mac_len, data, count);
state->mac_len += count;