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[7/9,v5] crypto:s5p-sss: validate iv before memcpy

Message ID 1390987528-18862-1-git-send-email-ch.naveen@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Naveen Krishna Chatradhi Jan. 29, 2014, 9:25 a.m. UTC 
This patch adds code to validate "iv" buffer before trying to
memcpy the contents

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
---
Changes since v4:
None

Changes since v3:
None

 drivers/crypto/s5p-sss.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
index da1c8943..a890273 100644
--- a/drivers/crypto/s5p-sss.c
+++ b/drivers/crypto/s5p-sss.c
@@ -380,7 +380,8 @@  static void s5p_set_aes(struct s5p_aes_dev *dev,
 {
 	void __iomem *keystart;
 
-	memcpy(dev->aes_ioaddr + SSS_REG_AES_IV_DATA (0), iv, 0x10);
+	if (iv)
+		memcpy(dev->aes_ioaddr + SSS_REG_AES_IV_DATA (0), iv, 0x10);
 
 	if (keylen == AES_KEYSIZE_256)
 		keystart = dev->aes_ioaddr + SSS_REG_AES_KEY_DATA(0);