diff options
| -rw-r--r-- | pkg/tcpip/transport/udp/udp_test.go | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/pkg/tcpip/transport/udp/udp_test.go b/pkg/tcpip/transport/udp/udp_test.go index db59eb5a0..91ba031fa 100644 --- a/pkg/tcpip/transport/udp/udp_test.go +++ b/pkg/tcpip/transport/udp/udp_test.go @@ -1721,9 +1721,11 @@ func TestIncrementMalformedPacketsReceived(t *testing.T) { payload := newPayload() h := unicastV6.header4Tuple(incoming) buf := c.buildV6Packet(payload, &h) - // Invalidate the packet length field in the UDP header by adding one. + + // Invalidate the UDP header length field. u := header.UDP(buf[header.IPv6MinimumSize:]) u.SetLength(u.Length() + 1) + c.linkEP.InjectInbound(ipv6.ProtocolNumber, &stack.PacketBuffer{ Data: buf.ToVectorisedView(), }) @@ -1803,9 +1805,16 @@ func TestIncrementChecksumErrorsV4(t *testing.T) { payload := newPayload() h := unicastV4.header4Tuple(incoming) buf := c.buildV4Packet(payload, &h) - // Invalidate the checksum field in the UDP header by adding one. - u := header.UDP(buf[header.IPv4MinimumSize:]) - u.SetChecksum(u.Checksum() + 1) + + // Invalidate the UDP header checksum field, taking care to avoid + // overflow to zero, which would disable checksum validation. + for u := header.UDP(buf[header.IPv4MinimumSize:]); ; { + u.SetChecksum(u.Checksum() + 1) + if u.Checksum() != 0 { + break + } + } + c.linkEP.InjectInbound(ipv4.ProtocolNumber, &stack.PacketBuffer{ Data: buf.ToVectorisedView(), }) @@ -1834,9 +1843,11 @@ func TestIncrementChecksumErrorsV6(t *testing.T) { payload := newPayload() h := unicastV6.header4Tuple(incoming) buf := c.buildV6Packet(payload, &h) - // Invalidate the checksum field in the UDP header by adding one. + + // Invalidate the UDP header checksum field. u := header.UDP(buf[header.IPv6MinimumSize:]) u.SetChecksum(u.Checksum() + 1) + c.linkEP.InjectInbound(ipv6.ProtocolNumber, &stack.PacketBuffer{ Data: buf.ToVectorisedView(), }) |