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[PATCH] fix infoleak in wilc_wfi_cfgoperations

From: Kangjie Lu <hidden>
Date: 2016-05-04 01:33:12
Also in: lkml
Subsystem: staging subsystem, the rest · Maintainers: Greg Kroah-Hartman, Linus Torvalds

"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, copy the mac address to it.

Signed-off-by: Kangjie Lu <redacted>
---
 drivers/staging/wilc1000/wilc_wfi_cfgoperations.c | 1 +
 1 file changed, 1 insertion(+)
diff --git a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
index 448a5c8..c6e71d9 100644
--- a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
+++ b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
@@ -1797,6 +1797,7 @@ static int dump_station(struct wiphy *wiphy, struct net_device *dev,
 
 	wilc_get_rssi(vif, &sinfo->signal);
 
+	memcpy(mac, priv->au8AssociatedBss, ETH_ALEN);
 	return 0;
 }
 
-- 
1.9.1
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