Mirrors/libwebsockets
1
0
Fork 0
mirror of https://github.com/warmcat/libwebsockets.git synced 2025-03-09 00:00:04 +01:00
Code Issues Releases Wiki Activity

coverity: adns: check length against 1500

Browse source
This commit is contained in:
Andy Green 2021-10-17 07:59:40 +01:00
parent 66afd3da78
commit a51def06a1
1 changed files with 7 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
lib/system/async-dns/async-dns-parse.c
View file

@ -37,6 +37,9 @@ lws_adns_parse_label(const uint8_t *pkt, int len, const uint8_t *ls, int budget,
uint8_t ll;
int n;
if (len < DHO_SIZEOF || len > 1500)
return -1;
if (budget < 1)
return 0;
@ -160,6 +163,9 @@ lws_adns_iterate(lws_adns_q_t *q, const uint8_t *pkt, int len,
char *sp, inq;
uint32_t ttl;
if (len < DHO_SIZEOF || len > 1500)
return -1;
lws_strncpy(stack[0].name, expname, sizeof(stack[0].name));
stack[0].enl = (int)strlen(expname);
@ -542,7 +548,7 @@ lws_adns_parse_udp(lws_async_dns_t *dns, const uint8_t *pkt, size_t len)
/* we have to at least have the header */
if (len < DHO_SIZEOF)
if (len < DHO_SIZEOF || len > 1500)
return;
/* we asked with one query, so anything else is bogus */