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crypto: ccree - zero out internal struct before use 

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@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gilad Ben-Yossef 2019-04-18 16:38:54 +03:00 committed by Herbert Xu
parent 03963caeb0
commit 9f31eb6e08
1 changed files with 16 additions and 0 deletions
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16
drivers/crypto/ccree/cc_aead.c
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@ -2095,6 +2095,8 @@ 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;
@ -2124,6 +2126,8 @@ 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;
@ -2143,6 +2147,8 @@ 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;
@ -2170,6 +2176,8 @@ 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;
@ -2287,6 +2295,8 @@ 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;
@ -2310,6 +2320,8 @@ 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;
@ -2342,6 +2354,8 @@ 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;
@ -2365,6 +2379,8 @@ 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;