[RFC PATCH 42/60] hyper_dmabuf: always generate a new random keys

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

 



From: Mateusz Polrola <mateuszx.potrola@xxxxxxxxx>

Need to update random keys when reusing hyper_dmabuf_id
in the list to increase security

Signed-off-by: Dongwon Kim <dongwon.kim@xxxxxxxxx>
---
 drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c b/drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c
index f59dee3..cccdc19 100644
--- a/drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c
+++ b/drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c
@@ -120,10 +120,11 @@ hyper_dmabuf_id_t hyper_dmabuf_get_hid(void)
 	 */
 	if (hid.id == -1 && count < HYPER_DMABUF_ID_MAX) {
 		hid.id = HYPER_DMABUF_ID_CREATE(hyper_dmabuf_private.domid, count++);
-		/* random data embedded in the id for security */
-		get_random_bytes(&hid.rng_key[0], 12);
 	}
 
+	/* random data embedded in the id for security */
+	get_random_bytes(&hid.rng_key[0], 12);
+
 	return hid;
 }
 
-- 
2.7.4

_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel




[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux