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
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