3.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Antonio Quartulli <or...@autistici.org>
commit badecb001a310408d3473b1fc2ed5aefd0bc92a9 upstream.
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.
Signed-off-by: Antonio Quartulli <or...@autistici.org>
[rewrapped commit message, small rewording]
Signed-off-by: Johannes Berg <johannes.b...@intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
net/mac80211/ibss.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -940,7 +940,7 @@ int ieee80211_ibss_join(struct ieee80211
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);
--
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