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Date: Thu, 13 Dec 2012 11:56:15 -0200 From: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Antonio Quartulli <ordex@...istici.org>, Johannes Berg <johannes.berg@...el.com>, Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com> Subject: [PATCH 010/241] mac80211: fix SSID copy on IBSS JOIN 3.5.7.2 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Antonio Quartulli <ordex@...istici.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 <ordex@...istici.org> [rewrapped commit message, small rewording] Signed-off-by: Johannes Berg <johannes.berg@...el.com> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com> --- net/mac80211/ibss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 33d9d0c..ebf6425 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -1111,7 +1111,7 @@ 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); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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