dhcpcd-7.2.2 has been released with the following fixes:

  • DHCP: Ensure dhcp is running on the interface received from
  • BSD: Link handling has been simplified, however it is expected that if an interface supports SIOCGIFMEDIA then it reports the correct link status via route(4) for reliable operations
  • BPF: ARP filter is more robust
  • BSD and sun: Validate RTM message lengths

This security issue has been addressed

  • DHCPv6: Fix a potential read overflow with D6_OPTION_PD_EXCLUDE

IT IS HIGHLY RECOMMENDED YOU UPGRADE DHCPCD!

Patch for dhcpcd-7 if you don't want to upgrade to dhcpcd-7.2.2:
https://roy.marples.name/cgit/dhcpcd.git/commit/?h=dhcpcd-7&id=c1ebeaafeb324bac997984abdcee2d4e8b61a8a8
https://roy.marples.name/cgit/dhcpcd.git/commit/?h=dhcpcd-7&id=896ef4a54b0578985e5e1360b141593f1d62837b

dhcpcd-6.11.7 has been released as well, with this in. I have no plans to fix earlier versions, heck you shouldn't even be using dhcpcd-6!

Many thanks to Maxime Villard max@m00nbsd.net for discovering this issue.

FTP: ftp://roy.marples.name/pub/dhcpcd/dhcpcd-7.2.2.tar.xz
HTTP: https://roy.marples.name/downloads/dhcpcd/dhcpcd-7.2.2.tar.xz
FTP: ftp://roy.marples.name/pub/dhcpcd/dhcpcd-6.11.7.tar.xz
HTTP: https://roy.marples.name/downloads/dhcpcd/dhcpcd-6.11.7.tar.xz

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