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| author | Arunk Khandavalli <akhandav@codeaurora.org> | 2018-08-30 00:40:16 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2018-08-30 10:58:21 +0300 |
| commit | 4f0223bfe9c3e62d8f45a85f1ef1b18a8a263ef9 (patch) | |
| tree | 3c5f43900e57afe26cec4f45eec5c9b4e5ff45ab /net/wireless/nl80211.c | |
| parent | 166ac9d55b0ab70b644e429be1f217fe8393cbd7 (diff) | |
| download | linux-4f0223bfe9c3e62d8f45a85f1ef1b18a8a263ef9.tar.xz | |
cfg80211: nl80211_update_ft_ies() to validate NL80211_ATTR_IE
nl80211_update_ft_ies() tried to validate NL80211_ATTR_IE with
is_valid_ie_attr() before dereferencing it, but that helper function
returns true in case of NULL pointer (i.e., attribute not included).
This can result to dereferencing a NULL pointer. Fix that by explicitly
checking that NL80211_ATTR_IE is included.
Fixes: 355199e02b83 ("cfg80211: Extend support for IEEE 802.11r Fast BSS Transition")
Signed-off-by: Arunk Khandavalli <akhandav@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index ce0149a86c13..733ccf867972 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -12099,6 +12099,7 @@ static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) return -EOPNOTSUPP; if (!info->attrs[NL80211_ATTR_MDID] || + !info->attrs[NL80211_ATTR_IE] || !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) return -EINVAL; |