[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20191110024541.31567-87-sashal@kernel.org>
Date: Sat, 9 Nov 2019 21:45:19 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Dan Aloni <dan@...nelim.com>,
Herbert Xu <herbert@...dor.apana.org.au>,
linux-crypto@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.14 087/109] crypto: fix a memory leak in rsa-kcs1pad's encryption mode
From: Dan Aloni <dan@...nelim.com>
[ Upstream commit 3944f139d5592790b70bc64f197162e643a8512b ]
The encryption mode of pkcs1pad never uses out_sg and out_buf, so
there's no need to allocate the buffer, which presently is not even
being freed.
CC: Herbert Xu <herbert@...dor.apana.org.au>
CC: linux-crypto@...r.kernel.org
CC: "David S. Miller" <davem@...emloft.net>
Signed-off-by: Dan Aloni <dan@...nelim.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
crypto/rsa-pkcs1pad.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c
index 407c64bdcdd9a..3279b457c4ede 100644
--- a/crypto/rsa-pkcs1pad.c
+++ b/crypto/rsa-pkcs1pad.c
@@ -261,15 +261,6 @@ static int pkcs1pad_encrypt(struct akcipher_request *req)
pkcs1pad_sg_set_buf(req_ctx->in_sg, req_ctx->in_buf,
ctx->key_size - 1 - req->src_len, req->src);
- req_ctx->out_buf = kmalloc(ctx->key_size, GFP_KERNEL);
- if (!req_ctx->out_buf) {
- kfree(req_ctx->in_buf);
- return -ENOMEM;
- }
-
- pkcs1pad_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf,
- 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,
pkcs1pad_encrypt_sign_complete_cb, req);
--
2.20.1
Powered by blists - more mailing lists