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    Subject[PATCH 7/9 v6] crypto:s5p-sss: validate iv before memcpy
    Date
    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 v5:
    None

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

    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);
    --
    1.7.9.5


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