From fd3e646c87ab3f2ba98aa25394581af27cc78dc5 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Thu, 22 Jan 2015 10:58:19 +0100 Subject: net: act_bpf: fix size mismatch on filter preparation Similarly as in cls_bpf, also this code needs to reject mismatches. Reference: http://article.gmane.org/gmane.linux.network/347406 Fixes: d23b8ad8ab23 ("tc: add BPF based action") Signed-off-by: Daniel Borkmann Acked-by: Jiri Pirko Acked-by: Alexei Starovoitov Signed-off-by: David S. Miller --- net/sched/act_bpf.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'net/sched/act_bpf.c') diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c index 1bd257e473a9..82c5d7fc1988 100644 --- a/net/sched/act_bpf.c +++ b/net/sched/act_bpf.c @@ -122,6 +122,9 @@ static int tcf_bpf_init(struct net *net, struct nlattr *nla, return -EINVAL; bpf_size = bpf_num_ops * sizeof(*bpf_ops); + if (bpf_size != nla_len(tb[TCA_ACT_BPF_OPS])) + return -EINVAL; + bpf_ops = kzalloc(bpf_size, GFP_KERNEL); if (!bpf_ops) return -ENOMEM; -- cgit v1.2.3-59-g8ed1b