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wpa: Correctly call pcap_next_ex()

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The second argument to pcap_next_ex() is a pointer to a pointer.
Not a pointer. This fixes a wpa_supplicent SIGSEGV.

PR:		263266
Reported by:	Marek Zarychta <zarychtam@plan-b.pwste.edu.pl>
Fixes:		6e5d01124f
MFC:		immediately
This commit is contained in:
Cy Schubert 2022-04-13 18:45:49 -07:00
parent 3e0f3678ec
commit 1e0ca65a3b
1 changed files with 4 additions and 4 deletions
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8
contrib/wpa/src/l2_packet/l2_packet_freebsd.c
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@ -77,7 +77,7 @@ static void l2_packet_receive(int sock, void *eloop_ctx, void *sock_ctx)
{
struct l2_packet_data *l2 = eloop_ctx;
pcap_t *pcap = sock_ctx;
struct pcap_pkthdr hdr;
struct pcap_pkthdr *hdr;
const u_char *packet;
struct l2_ethhdr *ethhdr;
unsigned char *buf;
@ -88,16 +88,16 @@ static void l2_packet_receive(int sock, void *eloop_ctx, void *sock_ctx)
eloop_terminate();
}
if (!l2->rx_callback || !packet || hdr.caplen < sizeof(*ethhdr))
if (!l2->rx_callback || !packet || hdr->caplen < sizeof(*ethhdr))
return;
ethhdr = (struct l2_ethhdr *) packet;
if (l2->l2_hdr) {
buf = (unsigned char *) ethhdr;
len = hdr.caplen;
len = hdr->caplen;
} else {
buf = (unsigned char *) (ethhdr + 1);
len = hdr.caplen - sizeof(*ethhdr);
len = hdr->caplen - sizeof(*ethhdr);
}
l2->rx_callback(l2->rx_callback_ctx, ethhdr->h_source, buf, len);
}