From f845e0c5753347df5331b6251da8ea7ddbf59ae9 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 24 Sep 2013 15:27:45 -0700 Subject: [PATCH] cciss: fix info leak in cciss_ioctl32_passthru() commit 58f09e00ae095e46ef9edfcf3a5fd9ccdfad065e upstream. 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 Acked-by: Mike Miller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- drivers/block/cciss.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index d3446f6..d7ad865 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -1186,6 +1186,7 @@ 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, -- 2.7.4