From 9f31eb6e08cc1b0eb3926eebf4c51467479a7722 Mon Sep 17 00:00:00 2001 From: Gilad Ben-Yossef Date: Thu, 18 Apr 2019 16:38:54 +0300 Subject: [PATCH] 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 Signed-off-by: Herbert Xu --- 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 16ae6081c4cb..d9d1c2c1c4d6 100644 --- a/drivers/crypto/ccree/cc_aead.c +++ b/drivers/crypto/ccree/cc_aead.c @@ -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; -- 2.30.2