From: Alexander Aring <aahringo@redhat.com>
To: stefan@datenfreihafen.org
Cc: linux-wpan@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH wpan 2/4] net: ieee802154: fix nl802154 del llsec dev
Date: Sun, 21 Feb 2021 12:43:19 -0500 [thread overview]
Message-ID: <20210221174321.14210-2-aahringo@redhat.com> (raw)
In-Reply-To: <20210221174321.14210-1-aahringo@redhat.com>
This patch fixes a nullpointer dereference if NL802154_ATTR_SEC_DEVICE is
not set by the user. If this is the case nl802154 will return -EINVAL.
Reported-by: syzbot+d946223c2e751d136c94@syzkaller.appspotmail.com
Signed-off-by: Alexander Aring <aahringo@redhat.com>
---
net/ieee802154/nl802154.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 2f0a138bd5eb..063b12cba71f 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -1758,7 +1758,8 @@ static int nl802154_del_llsec_dev(struct sk_buff *skb, struct genl_info *info)
struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
__le64 extended_addr;
- if (nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVICE], nl802154_dev_policy, info->extack))
+ if (!info->attrs[NL802154_ATTR_SEC_DEVICE] ||
+ nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVICE], nl802154_dev_policy, info->extack))
return -EINVAL;
if (!attrs[NL802154_DEV_ATTR_EXTENDED_ADDR])
--
2.26.2
next prev parent reply other threads:[~2021-02-21 17:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-21 17:43 [PATCH wpan 1/4] net: ieee802154: fix nl802154 del llsec key Alexander Aring
2021-02-21 17:43 ` Alexander Aring [this message]
2021-02-24 13:37 ` [PATCH wpan 2/4] net: ieee802154: fix nl802154 del llsec dev Stefan Schmidt
2021-02-21 17:43 ` [PATCH wpan 3/4] net: ieee802154: fix nl802154 add llsec key Alexander Aring
2021-02-24 13:38 ` Stefan Schmidt
2021-02-21 17:43 ` [PATCH wpan 4/4] net: ieee802154: fix nl802154 del llsec devkey Alexander Aring
2021-02-24 13:39 ` Stefan Schmidt
2021-02-24 13:39 ` Stefan Schmidt
2021-02-23 22:04 ` [PATCH wpan 1/4] net: ieee802154: fix nl802154 del llsec key Jakub Kicinski
2021-02-24 13:37 ` Stefan Schmidt
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