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Commit 6f0904ad authored by Tadeusz Struk's avatar Tadeusz Struk Committed by Herbert Xu
Browse files

crypto: rsa-pkcs1pad - fix dst len 



The output buffer length has to be at least as big as the key_size.
It is then updated to the actual output size by the implementation.

Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarTadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 47cd3060

crypto/rsa-pkcs1pad.c

+6 −6
Original line number Diff line number Diff line
@@ -387,16 +387,16 @@ static int pkcs1pad_decrypt(struct akcipher_request *req) 
	req_ctx->child_req.src = req->src;

	req_ctx->child_req.src_len = req->src_len;

	req_ctx->child_req.dst = req_ctx->out_sg;

	req_ctx->child_req.dst_len = ctx->key_size - 1;

	req_ctx->child_req.dst_len = ctx->key_size ;



	req_ctx->out_buf = kmalloc(ctx->key_size - 1,

	req_ctx->out_buf = kmalloc(ctx->key_size,

			(req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?

			GFP_KERNEL : GFP_ATOMIC);

	if (!req_ctx->out_buf)

		return -ENOMEM;



	pkcs1pad_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf,

			ctx->key_size - 1, NULL);

			    ctx->key_size, NULL);



	akcipher_request_set_tfm(&req_ctx->child_req, ctx->child);

	akcipher_request_set_callback(&req_ctx->child_req, req->base.flags,
@@ -595,16 +595,16 @@ static int pkcs1pad_verify(struct akcipher_request *req) 
	req_ctx->child_req.src = req->src;

	req_ctx->child_req.src_len = req->src_len;

	req_ctx->child_req.dst = req_ctx->out_sg;

	req_ctx->child_req.dst_len = ctx->key_size - 1;

	req_ctx->child_req.dst_len = ctx->key_size;



	req_ctx->out_buf = kmalloc(ctx->key_size - 1,

	req_ctx->out_buf = kmalloc(ctx->key_size,

			(req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?

			GFP_KERNEL : GFP_ATOMIC);

	if (!req_ctx->out_buf)

		return -ENOMEM;



	pkcs1pad_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf,

			ctx->key_size - 1, NULL);

			    ctx->key_size, NULL);



	akcipher_request_set_tfm(&req_ctx->child_req, ctx->child);

	akcipher_request_set_callback(&req_ctx->child_req, req->base.flags,