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DNS: Fix potential array out of bounds access. Variable nanswers may contain bogus values. (found by Coverity)

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Dirk Ziegelmeier 2016-02-10 20:41:31 +01:00
parent 78a36df901
commit 288b4564e4
1 changed files with 1 additions and 1 deletions
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2
src/core/dns.c
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@ -1129,7 +1129,7 @@ dns_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr,
/* skip the rest of the "question" part */ /* skip the rest of the "question" part */
res_idx += SIZEOF_DNS_QUERY; res_idx += SIZEOF_DNS_QUERY;
while (nanswers > 0) { while ((nanswers > 0) && (res_idx < p->tot_len)) {
/* skip answer resource record's host name */ /* skip answer resource record's host name */
res_idx = dns_parse_name(p, res_idx); res_idx = dns_parse_name(p, res_idx);