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Message-Id: <20200416131301.008084729@linuxfoundation.org>
Date: Thu, 16 Apr 2020 15:24:37 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Gilad Ben-Yossef <gilad@...yossef.com>,
Herbert Xu <herbert@...dor.apana.org.au>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 136/146] crypto: ccree - zero out internal struct before use
From: Gilad Ben-Yossef <gilad@...yossef.com>
[ Upstream commit 9f31eb6e08cc1b0eb3926eebf4c51467479a7722 ]
We did not zero out the internal struct before use causing problem
in some rare error code paths.
Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/crypto/ccree/cc_aead.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index aa6b45bc13b98..c9233420fe421 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -2058,6 +2058,8 @@ static int cc_aead_encrypt(struct aead_request *req)
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
int rc;
+ memset(areq_ctx, 0, sizeof(*areq_ctx));
+
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->backup_giv = NULL;
@@ -2087,6 +2089,8 @@ static int cc_rfc4309_ccm_encrypt(struct aead_request *req)
goto out;
}
+ memset(areq_ctx, 0, sizeof(*areq_ctx));
+
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->backup_giv = NULL;
@@ -2106,6 +2110,8 @@ static int cc_aead_decrypt(struct aead_request *req)
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
int rc;
+ memset(areq_ctx, 0, sizeof(*areq_ctx));
+
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->backup_giv = NULL;
@@ -2133,6 +2139,8 @@ static int cc_rfc4309_ccm_decrypt(struct aead_request *req)
goto out;
}
+ memset(areq_ctx, 0, sizeof(*areq_ctx));
+
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->backup_giv = NULL;
@@ -2250,6 +2258,8 @@ static int cc_rfc4106_gcm_encrypt(struct aead_request *req)
goto out;
}
+ memset(areq_ctx, 0, sizeof(*areq_ctx));
+
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->backup_giv = NULL;
@@ -2273,6 +2283,8 @@ static int cc_rfc4543_gcm_encrypt(struct aead_request *req)
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
int rc;
+ memset(areq_ctx, 0, sizeof(*areq_ctx));
+
//plaintext is not encryped with rfc4543
areq_ctx->plaintext_authenticate_only = true;
@@ -2305,6 +2317,8 @@ static int cc_rfc4106_gcm_decrypt(struct aead_request *req)
goto out;
}
+ memset(areq_ctx, 0, sizeof(*areq_ctx));
+
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->backup_giv = NULL;
@@ -2328,6 +2342,8 @@ static int cc_rfc4543_gcm_decrypt(struct aead_request *req)
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
int rc;
+ memset(areq_ctx, 0, sizeof(*areq_ctx));
+
//plaintext is not decryped with rfc4543
areq_ctx->plaintext_authenticate_only = true;
--
2.20.1
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