Commit c5f39d07 authored by Gilad Ben-Yossef's avatar Gilad Ben-Yossef Committed by Greg Kroah-Hartman

staging: ccree: fix leak of import() after init()

crypto_ahash_import() may be called either after
crypto_ahash_init() or without such call. Right now
we always internally call init() as part of
import(), thus leaking memory and mappings if the
user has already called init() herself.

Fix this by only calling init() internally if the
state is not already initialized.

Fixes: commit 454527d0 ("staging: ccree: fix hash import/export")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGilad Ben-Yossef <gilad@benyossef.com>
Reviewed-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 02d69c03
......@@ -1778,9 +1778,12 @@ static int ssi_ahash_import(struct ahash_request *req, const void *in)
}
in += sizeof(u32);
rc = ssi_hash_init(state, ctx);
if (rc)
goto out;
/* call init() to allocate bufs if the user hasn't */
if (!state->digest_buff) {
rc = ssi_hash_init(state, ctx);
if (rc)
goto out;
}
dma_sync_single_for_cpu(dev, state->digest_buff_dma_addr,
ctx->inter_digestsize, DMA_BIDIRECTIONAL);
......
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