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crypto: s5p-sss - validate iv before memcpy

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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>
CC: David S. Miller <davem@davemloft.net>
CC: <linux-samsung-soc@vger.kernel.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Naveen Krishna Chatradhi 2014-05-08 21:58:15 +08:00 • committed by Herbert Xu
parent e922e96f2f
commit 8f9702aad1
1 changed files with 2 additions and 1 deletions
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3
drivers/crypto/s5p-sss.c
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@ -380,7 +380,8 @@ static void s5p_set_aes(struct s5p_aes_dev *dev,
{ {
void __iomem *keystart; 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) if (keylen == AES_KEYSIZE_256)
keystart = dev->aes_ioaddr + SSS_REG_AES_KEY_DATA(0); keystart = dev->aes_ioaddr + SSS_REG_AES_KEY_DATA(0);