[B.A.T.M.A.N.] [PATCH] gw-bandwidth: fix potential overflow on very large input values, limit them to 100 GBit/s

[Ruben Wisniewski]

Signed-off-by: Ruben Wisniewsi <ru...@vfn-nrw.de>
---
 net/batman-adv/gateway_common.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/batman-adv/gateway_common.c
b/net/batman-adv/gateway_common.c index 39cf44c..6b0f4d3 100644
--- a/net/batman-adv/gateway_common.c
+++ b/net/batman-adv/gateway_common.c
@@ -71,10 +71,16 @@ static bool batadv_parse_gw_bandwidth(struct
net_device *net_dev, char *buff, 
        switch (bw_unit_type) {
        case BATADV_BW_UNIT_MBIT:
+               /* limit input to 100 GBit/s */
+               if (ldown > 100000) 
+                       ldown = 100000
                *down = ldown * 10;
                break;
        case BATADV_BW_UNIT_KBIT:
        default:
+               /* limit input to 100 GBit/s */
+               if (ldown > 100000000)
+                       ldown = 100000000
                *down = ldown / 100;
                break;
        }
-- 
2.4.0

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