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Just two netlink fixes, both allowing privileged users

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to crash the kernel with malformed netlink messages.
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Merge tag 'mac80211-for-davem-2017-11-19' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Just two netlink fixes, both allowing privileged users
to crash the kernel with malformed netlink messages.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2017-09-19 10:51:08 -07:00
commit fd0e4c5999
1 changed files with 6 additions and 0 deletions
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6
net/wireless/nl80211.c
View File

@ -9987,6 +9987,9 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
if (err)
return err;
if (!setup.chandef.chan)
return -EINVAL;
err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
&setup.beacon_rate);
if (err)
@ -10903,6 +10906,9 @@ static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
if (err)
return err;
if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
!tb[NL80211_REKEY_DATA_KCK])
return -EINVAL;
if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
return -ERANGE;
if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)