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dev_crypto_md5_update: check result of realloc(md_data->data) and don't leak memory if it 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 18:10:50 +01:00
committed by Kurt Roeckx
parent d8513b4abd
commit 771e0c6c7a
1 changed files with 5 additions and 1 deletions
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6
crypto/evp/openbsd_hw.c
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@@ -382,11 +382,15 @@ static int dev_crypto_md5_update(EVP_MD_CTX *ctx,const void *data,
unsigned long len) unsigned long len)
{ {
MD_DATA *md_data=ctx->md_data; MD_DATA *md_data=ctx->md_data;
char *tmp_md_data;
if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT) if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT)
return do_digest(md_data->sess.ses,md_data->md,data,len); return do_digest(md_data->sess.ses,md_data->md,data,len);
md_data->data=OPENSSL_realloc(md_data->data,md_data->len+len); tmp_md_data=OPENSSL_realloc(md_data->data,md_data->len+len);
if (tmp_md_data == NULL)
return 0;
md_data->data=tmp_md_data;
memcpy(md_data->data+md_data->len,data,len); memcpy(md_data->data+md_data->len,data,len);
md_data->len+=len; md_data->len+=len;