From e5105970e87c0c877a6c54c775f83d30f8d7b57c Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Fri, 14 Nov 2003 19:17:45 +0000 Subject: check if received netlink messages are really from the kernel (pid==0) --- libipq/libipq.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'libipq') diff --git a/libipq/libipq.c b/libipq/libipq.c index 709c8a21..a25ad4ce 100644 --- a/libipq/libipq.c +++ b/libipq/libipq.c @@ -171,6 +171,10 @@ static ssize_t ipq_netlink_recvfrom(const struct ipq_handle *h, ipq_errno = IPQ_ERR_RECV; return -1; } + if (h->peer.nl_pid != 0) { + ipq_errno = IPQ_ERR_RECV; + return -1; + } if (status == 0) { ipq_errno = IPQ_ERR_NLEOF; return -1; -- cgit v1.2.3