lkml.org 
[lkml]   [2017]   [Dec]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH 42/60] hyper_dmabuf: always generate a new random keys
Date
From: Mateusz Polrola <mateuszx.potrola@intel.com>

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

Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
---
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
\
 
 \ /
  Last update: 2017-12-19 20:43    [W:1.243 / U:6.852 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site