diff options
| author | Mariusz Kozlowski <mk@lab.zgora.pl> | 2011-03-26 18:58:51 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-03-28 15:42:02 -0400 |
| commit | 67aa030c0dff6095128bcb4e8043b48360f32331 (patch) | |
| tree | 91f839fbe604cf1f96a12b2ca09bb65a317fe284 /net/mac80211/key.c | |
| parent | 1f951a7f8ba05192291f781ef99a892697e47d62 (diff) | |
| download | lwn-67aa030c0dff6095128bcb4e8043b48360f32331.tar.gz lwn-67aa030c0dff6095128bcb4e8043b48360f32331.zip | |
mac80211: fix possible NULL pointer dereference
This patch moves 'key' dereference after BUG_ON(!key) so that when key is NULL
we will see proper trace instead of oops.
Signed-off-by: Mariusz Kozlowski <mk@lab.zgora.pl>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/key.c')
| -rw-r--r-- | net/mac80211/key.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/key.c b/net/mac80211/key.c index 09cf1f28c12b..af3c56482c80 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -400,11 +400,12 @@ int ieee80211_key_link(struct ieee80211_key *key, { struct ieee80211_key *old_key; int idx, ret; - bool pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE; + bool pairwise; BUG_ON(!sdata); BUG_ON(!key); + pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE; idx = key->conf.keyidx; key->local = sdata->local; key->sdata = sdata; |