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| author | gVisor bot <gvisor-bot@google.com> | 2020-04-24 00:33:56 +0000 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-04-24 00:33:56 +0000 |
| commit | c860716ef867306f28feccf25ab9c0066e3c5ffb (patch) | |
| tree | 02ef0516b5fea1e5be8723d1c1999aa22f145282 /pkg/tcpip/transport/icmp | |
| parent | 4b90fa57811fd8ad60e10cfe8fa0fca9edb7522c (diff) | |
| parent | eccae0f77d3708d591119488f427eca90de7c711 (diff) | |
Merge release-20200323.0-227-geccae0f (automated)
Diffstat (limited to 'pkg/tcpip/transport/icmp')
| -rw-r--r-- | pkg/tcpip/transport/icmp/endpoint.go | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/pkg/tcpip/transport/icmp/endpoint.go b/pkg/tcpip/transport/icmp/endpoint.go index feef8dca0..b1d820372 100644 --- a/pkg/tcpip/transport/icmp/endpoint.go +++ b/pkg/tcpip/transport/icmp/endpoint.go @@ -747,15 +747,15 @@ func (e *endpoint) HandlePacket(r *stack.Route, id stack.TransportEndpointID, pk // Only accept echo replies. switch e.NetProto { case header.IPv4ProtocolNumber: - h := header.ICMPv4(pkt.Data.First()) - if h.Type() != header.ICMPv4EchoReply { + h, ok := pkt.Data.PullUp(header.ICMPv4MinimumSize) + if !ok || header.ICMPv4(h).Type() != header.ICMPv4EchoReply { e.stack.Stats().DroppedPackets.Increment() e.stats.ReceiveErrors.MalformedPacketsReceived.Increment() return } case header.IPv6ProtocolNumber: - h := header.ICMPv6(pkt.Data.First()) - if h.Type() != header.ICMPv6EchoReply { + h, ok := pkt.Data.PullUp(header.ICMPv6MinimumSize) + if !ok || header.ICMPv6(h).Type() != header.ICMPv6EchoReply { e.stack.Stats().DroppedPackets.Increment() e.stats.ReceiveErrors.MalformedPacketsReceived.Increment() return |