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| author | Alexander Aring <aahringo@redhat.com> | 2021-04-04 20:30:53 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-16 11:59:11 +0200 |
| commit | 8f1696d0f979131a314d0b6b8822c4a466ea122d (patch) | |
| tree | 1ade900c79b5b9c4197dfcaf5156a9646f6d2e24 | |
| parent | c86de71fddc294cea39ec9dc7d1dc02ebb0b10e9 (diff) | |
| download | linux-stable-8f1696d0f979131a314d0b6b8822c4a466ea122d.tar.gz linux-stable-8f1696d0f979131a314d0b6b8822c4a466ea122d.tar.bz2 linux-stable-8f1696d0f979131a314d0b6b8822c4a466ea122d.zip | |
net: ieee802154: forbid monitor for del llsec seclevel
commit 9dde130937e95b72adfae64ab21d6e7e707e2dac upstream.
This patch forbids to del llsec seclevel for monitor interfaces which we
don't support yet. Otherwise we will access llsec mib which isn't
initialized for monitors.
Reported-by: syzbot+fbf4fc11a819824e027b@syzkaller.appspotmail.com
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210405003054.256017-15-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/ieee802154/nl802154.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c index c1412cd87fe7..0a88bb254a93 100644 --- a/net/ieee802154/nl802154.c +++ b/net/ieee802154/nl802154.c @@ -2137,6 +2137,9 @@ static int nl802154_del_llsec_seclevel(struct sk_buff *skb, struct wpan_dev *wpan_dev = dev->ieee802154_ptr; struct ieee802154_llsec_seclevel sl; + if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) + return -EOPNOTSUPP; + if (!info->attrs[NL802154_ATTR_SEC_LEVEL] || llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL], &sl) < 0) |