PERFORCE change 134525 for review

[Sam Leffler]

http://perforce.freebsd.org/chv.cgi?CH=134525

Change 134525 by sam at sam_ebb on 2008/01/31 06:18:26

	sanity-check the country ie before parsing

Affected files ...

.. //depot/projects/vap/sys/net80211/ieee80211_scan.c#14 edit

Differences ...

==== //depot/projects/vap/sys/net80211/ieee80211_scan.c#14 (text+ko) ====

@@ -1020,6 +1020,10 @@
 	   (const struct ieee80211_country_ie *) ie;
 	int i, nbands, schan, nchan;
 
+	if (cie->len < 3) {
+		printf(" <bogus country ie, len %d>", cie->len);
+		return;
+	}
 	printf(" country [%c%c%c", cie->cc[0], cie->cc[1], cie->cc[2]);
 	nbands = (cie->len - 3) / sizeof(cie->band[0]);
 	for (i = 0; i < nbands; i++) {