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authorAntonio Quartulli <ordex@autistici.org>2012-10-26 20:54:25 +0400
committerJohannes Berg <johannes.berg@intel.com>2012-10-27 00:52:18 +0400
commitbadecb001a310408d3473b1fc2ed5aefd0bc92a9 (patch)
tree3c39faabf192afce572be53b96bb65ad07ea7183 /net
parentf7fbf70ee9db6da6033ae50d100e017ac1f26555 (diff)
downloadlinux-badecb001a310408d3473b1fc2ed5aefd0bc92a9.tar.xz
mac80211: fix SSID copy on IBSS JOIN
The 'ssid' field of the cfg80211_ibss_params is a u8 pointer and its length is likely to be less than IEEE80211_MAX_SSID_LEN most of the time. This patch fixes the ssid copy in ieee80211_ibss_join() by using the SSID length to prevent it from reading beyond the string. Cc: stable@vger.kernel.org Signed-off-by: Antonio Quartulli <ordex@autistici.org> [rewrapped commit message, small rewording] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/ibss.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 5f3620f0bc0a..bf87c70ac6c5 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -1108,7 +1108,7 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH;
sdata->u.ibss.ibss_join_req = jiffies;
- memcpy(sdata->u.ibss.ssid, params->ssid, IEEE80211_MAX_SSID_LEN);
+ memcpy(sdata->u.ibss.ssid, params->ssid, params->ssid_len);
sdata->u.ibss.ssid_len = params->ssid_len;
mutex_unlock(&sdata->u.ibss.mtx);