Allow only IPv4 addresses in sendto() for TCP on AF_INET sockets
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Authored by tuexen on May 13 2020, 10:06 PM.

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imp

melifaro

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rscheff
rrs

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transport

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rS361081: Allow only IPv4 addresses in sendto() for TCP on AF_INET sockets.

Summary

Without this patch IPv4-mapped IPv6 addresses would be accepted in sendto() on a TCP socket created for AF_INET.

This problem was found by looking at syzkaller reproducers for some other problems.

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rS FreeBSD src repository - subversion

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Event Timeline

tuexen created this revision.May 13 2020, 10:06 PM

Herald added a reviewer: transport. · View Herald TranscriptMay 13 2020, 10:06 PM

Herald added subscribers: melifaro, imp. · View Herald Transcript

tuexen requested review of this revision.May 13 2020, 10:06 PM

Harbormaster completed remote builds in B31069: Diff 71740.May 13 2020, 10:06 PM

rrs accepted this revision.May 15 2020, 1:57 PM

This revision is now accepted and ready to land.May 15 2020, 1:57 PM

Closed by commit rS361081: Allow only IPv4 addresses in sendto() for TCP on AF_INET sockets. (authored by tuexen). · Explain WhyMay 15 2020, 2:06 PM

This revision was automatically updated to reflect the committed changes.

tuexen added a commit: rS361081: Allow only IPv4 addresses in sendto() for TCP on AF_INET sockets..

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head/

sys/

netinet/

tcp_usrreq.c

6 lines

Diff 71823

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head/sys/netinet/tcp_usrreq.c

Allow only IPv4 addresses in sendto() for TCP on AF_INET socketsClosedPublicActions