-----Original Message----- From: Dan Carpenter [mailto:dan.carpenter@xxxxxxxxxx] Sent: Wednesday, September 11, 2013 2:39 AM To: Miller, Mike (OS Dev); Andrew Morton Cc: ISS StorageDev; linux-kernel@xxxxxxxxxxxxxxx; kernel-janitors@xxxxxxxxxxxxxxx; Moritz Muehlenhoff Subject: [patch -resend] cciss: info leak in cciss_ioctl32_passthru() The arg64 struct has a hole after ->buf_size which isn't cleared. Or if any of the calls to copy_from_user() fail then that would cause an information leak as well. This was assigned CVE-2013-2147. Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Acked-by: Mike Miller <mike.miller@xxxxxx> diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 6374dc1..34971aa 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -1189,6 +1189,7 @@ static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, int err; u32 cp; + memset(&arg64, 0, sizeof(arg64)); err = 0; err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, -- 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
