net/sched: act_simple: fix parsing of TCA_DEF_DATA
authorDavide Caratti <dcaratti@redhat.com>
Fri, 8 Jun 2018 03:02:31 +0000 (05:02 +0200)
committerDavid S. Miller <davem@davemloft.net>
Fri, 8 Jun 2018 22:49:19 +0000 (18:49 -0400)
commit8d499533e0bc02d44283dbdab03142b599b8ba16
treeeaf7ec1426a9c9625b43711b6578109f22358ffc
parent6310a882fbe0b87e0950222f2ac197ed92e11792
net/sched: act_simple: fix parsing of TCA_DEF_DATA

use nla_strlcpy() to avoid copying data beyond the length of TCA_DEF_DATA
netlink attribute, in case it is less than SIMP_MAX_DATA and it does not
end with '\0' character.

v2: fix errors in the commit message, thanks Hangbin Liu

Fixes: fa1b1cff3d06 ("net_cls_act: Make act_simple use of netlink policy.")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sched/act_simple.c