[patch 2/2] crypto: img-hash - shift wrapping bug in img_hash_hw_init()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



"hdev->req->nbytes" is an unsigned int so we so we lose the upper 3
bytes to the shift wrap bug.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c
index 601ab35..ad47d0d 100644
--- a/drivers/crypto/img-hash.c
+++ b/drivers/crypto/img-hash.c
@@ -464,7 +464,7 @@ static int img_hash_hw_init(struct img_hash_dev *hdev)
 	img_hash_write(hdev, CR_RESET, CR_RESET_UNSET);
 	img_hash_write(hdev, CR_INTENAB, CR_INT_NEW_RESULTS_SET);
 
-	nbits = (hdev->req->nbytes << 3);
+	nbits = (u64)hdev->req->nbytes << 3;
 	u = nbits >> 32;
 	l = nbits;
 	img_hash_write(hdev, CR_MESSAGE_LENGTH_H, u);
--
To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Kernel Development]     [Kernel Announce]     [Kernel Newbies]     [Linux Networking Development]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Device Mapper]

  Powered by Linux