diff options
| -rw-r--r-- | ext/standard/dns.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/ext/standard/dns.c b/ext/standard/dns.c index 6a894467ff..214a7dc7e9 100644 --- a/ext/standard/dns.c +++ b/ext/standard/dns.c @@ -517,6 +517,10 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int while (ll < dlen) { n = cp[ll]; + if ((ll + n) >= dlen) { + // Invalid chunk length, truncate + n = dlen - (ll + 1); + } memcpy(tp + ll , cp + ll + 1, n); add_next_index_stringl(entries, cp + ll + 1, n, 1); ll = ll + n + 1; |