Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1641778

[PATCH] scsi: aacraid: fix leak of data from stack back to userspace

Show all headers | View raw

From: Colin Ian King <colin.king@canonical.com>

The fields sense_data_size and sense_data are unitialized garbage from
the stack and are being copied back to userspace.  Fix this leak of
stack information by ensuring they are zero'd.

Detected by CoverityScan, CID#1435473 ("Uninitialized scalar variable")

Fixes: 423400e64d377 ("scsi: aacraid: Include HBA direct interface")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/scsi/aacraid/commctrl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index 106b9332f718..6bb6ed48e31d 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -955,6 +955,8 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 			reply.srb_status = SRB_STATUS_SUCCESS;
 			reply.scsi_status = 0;
 			reply.data_xfer_length = byte_count;
+			reply.sense_data_size = 0;
+			memset(reply.sense_data, 0, AAC_SENSE_BUFFERSIZE);
 		} else {
 			reply.srb_status = err->service_response;
 			reply.scsi_status = err->status;
-- 
2.11.0

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH] scsi: aacraid: fix leak of data from stack back to userspace Colin King <colin.king@canonical.com> - 2017-05-15 17:00 +0200
  Re: [PATCH] scsi: aacraid: fix leak of data from stack back to userspace walter harms <wharms@bfs.de> - 2017-05-15 17:10 +0200

csiph-web