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Fix mux overflow

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世界 2022-08-08 08:09:17 +08:00
parent 0f74f6cd60
commit 2c6d239525
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1 changed files with 7 additions and 0 deletions
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7
common/mux/service.go
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@ -3,6 +3,7 @@ package mux
import ( import (
"context" "context"
"encoding/binary" "encoding/binary"
"io"
"net" "net"
"github.com/sagernet/sing-box/adapter" "github.com/sagernet/sing-box/adapter"
@ -156,6 +157,9 @@ func (c *ServerPacketConn) ReadPacket(buffer *buf.Buffer) (destination M.Socksad
if err != nil { if err != nil {
return return
} }
if buffer.FreeLen() < int(length) {
return destination, io.ErrShortBuffer
}
_, err = buffer.ReadFullFrom(c.ExtendedConn, int(length)) _, err = buffer.ReadFullFrom(c.ExtendedConn, int(length))
if err != nil { if err != nil {
return return
@ -218,6 +222,9 @@ func (c *ServerPacketAddrConn) ReadPacket(buffer *buf.Buffer) (destination M.Soc
if err != nil { if err != nil {
return return
} }
if buffer.FreeLen() < int(length) {
return destination, io.ErrShortBuffer
}
_, err = buffer.ReadFullFrom(c.ExtendedConn, int(length)) _, err = buffer.ReadFullFrom(c.ExtendedConn, int(length))
if err != nil { if err != nil {
return return