* [patch] prism54: potential memory corruption in prism54_get_essid()
@ 2011-11-21 14:47 Dan Carpenter
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From: Dan Carpenter @ 2011-11-21 14:47 UTC (permalink / raw)
To: Luis R. Rodriguez; +Cc: John W. Linville, linux-wireless, kernel-janitors
"dwrq->length" is the capped version of "essid->length".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/net/wireless/prism54/isl_ioctl.c b/drivers/net/wireless/prism54/isl_ioctl.c
index d97a2ca..bc2ba80 100644
--- a/drivers/net/wireless/prism54/isl_ioctl.c
+++ b/drivers/net/wireless/prism54/isl_ioctl.c
@@ -778,7 +778,7 @@ prism54_get_essid(struct net_device *ndev, struct iw_request_info *info,
dwrq->flags = 0;
dwrq->length = 0;
}
- essid->octets[essid->length] = '\0';
+ essid->octets[dwrq->length] = '\0';
memcpy(extra, essid->octets, dwrq->length);
kfree(essid);
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2011-11-21 14:47 [patch] prism54: potential memory corruption in prism54_get_essid() Dan Carpenter
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