evie/android_kernel_oneplus_msm8998
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net: memset smsg to avoid the padding data

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memset smsg to avoid the padding data of kernel to be shared
with user space. Fix is to set fields event to all "0", but there is
actually 6 bytes padding between "sktype" and "skflags", so memset was
done to set all the padding bits to 0.

CRs-Fixed: 2287852

Change-Id: I435486b80ad19c5fa54b098680623e7a4f080198
Signed-off-by: Kaustubh Pandey <kapandey@codeaurora.org>
Acked-by: Chinmay Agarwal <chinagar@qti.qualcomm.com>
This commit is contained in:
Kaustubh Pandey 2018-08-20 13:00:36 +05:30 • committed by Gerrit - the friendly Code Review server
parent c25026979f
commit 7108e8fe08
1 changed files with 1 additions and 1 deletions
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2
net/core/sockev_nlmcast.c
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@ -36,7 +36,6 @@ static struct netlink_kernel_cfg nlcfg = {
static void _sockev_event(unsigned long event, __u8 *evstr, int buflen)
{
memset(evstr, 0, buflen);
switch (event) {
case SOCKEV_SOCKET:
@ -99,6 +98,7 @@ static int sockev_client_cb(struct notifier_block *nb,
NETLINK_CB(skb).dst_group = SKNLGRP_SOCKEV;
smsg = nlmsg_data(nlh);
memset(smsg, 0, sizeof(struct sknlsockevmsg));
smsg->pid = current->pid;
_sockev_event(event, smsg->event, sizeof(smsg->event));
smsg->skfamily = sk->sk_family;