From: Alexander Aring <aring@mojatatu.com>
To: stefan@datenfreihafen.org
Cc: linux-wpan@vger.kernel.org, Alexander Aring <aring@mojatatu.com>
Subject: [PATCHv2 wpan] ieee802154: hwsim: fix off-by-one in parse nested
Date: Thu, 29 Nov 2018 17:41:54 -0500 [thread overview]
Message-ID: <20181129224154.7525-1-aring@mojatatu.com> (raw)
This patch fixes a off-by-one mistake in nla_parse_nested() functions of
mac802154_hwsim driver. I had to enabled stack protector so I was able
to reproduce it.
Reference: https://github.com/linux-wpan/wpan-tools/issues/17
Signed-off-by: Alexander Aring <aring@mojatatu.com>
---
drivers/net/ieee802154/mac802154_hwsim.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ieee802154/mac802154_hwsim.c b/drivers/net/ieee802154/mac802154_hwsim.c
index bf70ab892e69..624bff4d3636 100644
--- a/drivers/net/ieee802154/mac802154_hwsim.c
+++ b/drivers/net/ieee802154/mac802154_hwsim.c
@@ -500,7 +500,7 @@ static int hwsim_del_edge_nl(struct sk_buff *msg, struct genl_info *info)
!info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE])
return -EINVAL;
- if (nla_parse_nested(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX + 1,
+ if (nla_parse_nested(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX,
info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE],
hwsim_edge_policy, NULL))
return -EINVAL;
@@ -550,7 +550,7 @@ static int hwsim_set_edge_lqi(struct sk_buff *msg, struct genl_info *info)
!info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE])
return -EINVAL;
- if (nla_parse_nested(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX + 1,
+ if (nla_parse_nested(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX,
info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE],
hwsim_edge_policy, NULL))
return -EINVAL;
--
2.11.0
next reply other threads:[~2018-11-30 9:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-29 22:41 Alexander Aring [this message]
2018-12-02 11:19 ` [PATCHv2 wpan] ieee802154: hwsim: fix off-by-one in parse nested Stefan Schmidt
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