From: Kangjie Lu <kangjielu@gmail.com>
To: Larry.Finger@lwfinger.net
Cc: Jes.Sorensen@redhat.com, gregkh@linuxfoundation.org,
linux-wireless@vger.kernel.org, evel@driverdev.osuosl.org,
linux-kernel@vger.kernel.org, taesoo@gatech.edu, insu@gatech.edu,
csong84@gatech.edu, Kangjie Lu <kjlu@gatech.edu>
Subject: [PATCH] fix infoleak in ioctl_cfg80211
Date: Tue, 3 May 2016 18:11:46 -0400 [thread overview]
Message-ID: <1462313506-7742-1-git-send-email-kjlu@gatech.edu> (raw)
"mac" is an array allocated in stack without being initialized,
and will be sent out via "nla_put". The dump_station() is supposed
to initialize the mac address; otherwise, sensitive data in kernel
stack will be leaked. To fix this, either initialize it (e.g.,
memset) or completely remove this dump_station().
Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
---
drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
index 12d1844..44a1582 100644
--- a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
+++ b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
@@ -2926,6 +2926,7 @@ static int cfg80211_rtw_dump_station(struct wiphy *wiphy,
/* TODO: dump scanned queue */
+ memset(mac, 0, ETH_ALEN);
return -ENOENT;
}
--
1.9.1
next reply other threads:[~2016-05-03 22:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 22:11 Kangjie Lu [this message]
2016-05-03 23:05 ` [PATCH] fix infoleak in ioctl_cfg80211 Greg KH
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