diff options
Diffstat (limited to 'src/libsystemd-network/dhcp-packet.c')
| -rw-r--r-- | src/libsystemd-network/dhcp-packet.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/libsystemd-network/dhcp-packet.c b/src/libsystemd-network/dhcp-packet.c index bed942fd84..9779cbd51d 100644 --- a/src/libsystemd-network/dhcp-packet.c +++ b/src/libsystemd-network/dhcp-packet.c @@ -157,6 +157,11 @@ int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum) { /* UDP */ + if (packet->ip.protocol != IPPROTO_UDP) { + log_dhcp_client(client, "ignoring packet: not UDP"); + return -EINVAL; + } + if (len < DHCP_IP_UDP_SIZE) { log_dhcp_client(client, "ignoring packet: packet (%zu bytes) " " smaller than IP+UDP header (%u bytes)", len, |