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

Signed-off-by: Ruben Wisniewsi ruben@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; }