lisa/android_kernel_xiaomi_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

qbt_handler: Memset userspace struct to zero

Browse Source 
Explicitly memset struct to zero before sending
to userspace. This is to prevent padded bytes
from possibly leaking kernel memory contents to
userspace.

Change-Id: Id3e873164430c34195344884b2899e61aa060dfc
Signed-off-by: Abir Ghosh <abirg@codeaurora.org>
This commit is contained in:
Abir Ghosh 2020-10-28 12:03:09 +05:30 committed by Gerrit - the friendly Code Review server
parent 5b47848843
commit 3511d06529
1 changed files with 1 additions and 0 deletions

1
drivers/soc/qcom/qbt_handler.c
View File

@ -511,6 +511,7 @@ static long qbt_ioctl(
{
struct qbt_wuhb_connected_status wuhb_connected_status;
memset(&wuhb_connected_status, 0, sizeof(wuhb_connected_status));
wuhb_connected_status.is_wuhb_connected =
drvdata->is_wuhb_connected;
rc = copy_to_user((void __user *)priv_arg,