From: Kai Ye <yekai13@huawei.com>
Date: Sat, 22 Jan 2022 08:13:10 +0000 (+0800)
Subject: crypto: hisilicon/sec - fix the max length of AAD for the CCM mode
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5e340558c5c7f64504ef1f4d31af152f26705261;p=linux.git

crypto: hisilicon/sec - fix the max length of AAD for the CCM mode

Fix the maximum length of AAD for the CCM mode due to the hardware limited.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c
index 48abd3871c0e4..8305eee9a3d34 100644
--- a/drivers/crypto/hisilicon/sec2/sec_crypto.c
+++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c
@@ -63,6 +63,7 @@
 #define SEC_AUTH_CIPHER		0x1
 #define SEC_MAX_MAC_LEN		64
 #define SEC_MAX_AAD_LEN		65535
+#define SEC_MAX_CCM_AAD_LEN	65279
 #define SEC_TOTAL_MAC_SZ	(SEC_MAX_MAC_LEN * QM_Q_DEPTH)
 
 #define SEC_PBUF_SZ			512
@@ -2220,6 +2221,10 @@ static int sec_aead_spec_check(struct sec_ctx *ctx, struct sec_req *sreq)
 	}
 
 	if (c_mode == SEC_CMODE_CCM) {
+		if (unlikely(req->assoclen > SEC_MAX_CCM_AAD_LEN)) {
+			dev_err_ratelimited(dev, "CCM input aad parameter is too long!\n");
+			return -EINVAL;
+		}
 		ret = aead_iv_demension_check(req);
 		if (ret) {
 			dev_err(dev, "aead input iv param error!\n");