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fix buffer overrun in unpack()

This commit is contained in:
Miek Gieben 2014-11-04 20:17:43 +00:00
parent 3a660df5ae
commit d92b230e89
1 changed files with 2 additions and 2 deletions
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4
edns.go
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@ -287,7 +287,7 @@ func (e *EDNS0_SUBNET) unpack(b []byte) error {
case 1:
addr := make([]byte, 4)
for i := 0; i < int(e.SourceNetmask/8); i++ {
if 4+i > len(b) {
if i >= len(addr) || 4+i >= len(b) {
return ErrBuf
}
addr[i] = b[4+i]
@ -296,7 +296,7 @@ func (e *EDNS0_SUBNET) unpack(b []byte) error {
case 2:
addr := make([]byte, 16)
for i := 0; i < int(e.SourceNetmask/8); i++ {
if 4+i > len(b) {
if i >= len(addr) || 4+i >= len(b) {
return ErrBuf
}
addr[i] = b[4+i]