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Differential D31422

tcp, udp: improve input validation in bind()
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Authored by tuexen on Aug 5 2021, 11:03 AM.

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rGdb8fc0ef23d1: tcp, udp: improve input validation in handling bind()
rG3f1f6b6ef7f6: tcp, udp: improve input validation in handling bind()

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This fixes:

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rG FreeBSD src repository

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tuexen created this revision.Aug 5 2021, 11:03 AM

Herald added a reviewer: transport. · View Herald TranscriptAug 5 2021, 11:03 AM

Herald added a subscriber: melifaro. · View Herald Transcript

tuexen requested review of this revision.Aug 5 2021, 11:03 AM

tuexen added reviewers: rscheff, rrs.

lgtm

This revision is now accepted and ready to land.Aug 5 2021, 11:08 AM

Thank you.

sys/netinet/tcp_usrreq.c
329	I would just check `nam->sa_len != sizeof(*sinp)` since we perform that exact check again below. This is ok though.

tuexen marked an inline comment as done.Aug 5 2021, 1:04 PM

tuexen added inline comments.

sys/netinet/tcp_usrreq.c
329	I was considering that or even just do the check for `sa_len` before the check for `sa_family`. I decided to do it this way to report `EINVAL` if `sa_len` is not correct as often as possible.

Closed by commit rG3f1f6b6ef7f6: tcp, udp: improve input validation in handling bind() (authored by tuexen). · Explain WhyAug 5 2021, 1:12 PM

This revision was automatically updated to reflect the committed changes.

tuexen marked an inline comment as done.

tuexen added a commit: rG3f1f6b6ef7f6: tcp, udp: improve input validation in handling bind().

tuexen added a commit: rGdb8fc0ef23d1: tcp, udp: improve input validation in handling bind().Feb 22 2022, 10:28 PM

Herald added subscribers: glebius, imp. · View Herald TranscriptFeb 22 2022, 10:28 PM

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sys/

netinet/

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Diff 93266

sys/netinet/tcp_usrreq.c

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sys/netinet/udp_usrreq.c

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