diff options
Diffstat (limited to 'vendor/github.com/miekg/dns/msg.go')
| -rw-r--r-- | vendor/github.com/miekg/dns/msg.go | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/vendor/github.com/miekg/dns/msg.go b/vendor/github.com/miekg/dns/msg.go index 7001f6da79..1728a98b7d 100644 --- a/vendor/github.com/miekg/dns/msg.go +++ b/vendor/github.com/miekg/dns/msg.go @@ -624,11 +624,18 @@ func UnpackRRWithHeader(h RR_Header, msg []byte, off int) (rr RR, off1 int, err rr = &RFC3597{Hdr: h} } - if noRdata(h) { - return rr, off, nil + if off < 0 || off > len(msg) { + return &h, off, &Error{err: "bad off"} } end := off + int(h.Rdlength) + if end < off || end > len(msg) { + return &h, end, &Error{err: "bad rdlength"} + } + + if noRdata(h) { + return rr, off, nil + } off, err = rr.unpack(msg, off) if err != nil { |