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| author | Alexander Aring <aahringo@redhat.com> | 2021-02-21 12:43:18 -0500 |
|---|---|---|
| committer | Stefan Schmidt <stefan@datenfreihafen.org> | 2021-02-24 14:14:19 +0100 |
| commit | 37feaaf5ceb2245e474369312bb7b922ce7bce69 (patch) | |
| tree | 11d7aa672d3828ae3a00ceffde625228a12e07c8 /net/ieee802154 | |
| parent | cdd38c5f1ce4398ec58fec95904b75824daab7b5 (diff) | |
| download | linux-37feaaf5ceb2245e474369312bb7b922ce7bce69.tar.gz linux-37feaaf5ceb2245e474369312bb7b922ce7bce69.tar.bz2 linux-37feaaf5ceb2245e474369312bb7b922ce7bce69.zip | |
net: ieee802154: fix nl802154 del llsec key
This patch fixes a nullpointer dereference if NL802154_ATTR_SEC_KEY is
not set by the user. If this is the case nl802154 will return -EINVAL.
Reported-by: syzbot+ac5c11d2959a8b3c4806@syzkaller.appspotmail.com
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210221174321.14210-1-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Diffstat (limited to 'net/ieee802154')
| -rw-r--r-- | net/ieee802154/nl802154.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c index 1cebdcedc48c..f4a4d4a417e0 100644 --- a/net/ieee802154/nl802154.c +++ b/net/ieee802154/nl802154.c @@ -1592,7 +1592,8 @@ static int nl802154_del_llsec_key(struct sk_buff *skb, struct genl_info *info) struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1]; struct ieee802154_llsec_key_id id; - if (nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack)) + if (!info->attrs[NL802154_ATTR_SEC_KEY] || + nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack)) return -EINVAL; if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0) |