rip: Add missing minimum length validation
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Authored by markj on Jul 25 2021, 9:46 PM.

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donner

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network

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rGba2182520273: rip: Add missing minimum length validation in rip_output()

Summary

If the socket is configured such that the sender is expected to supply
the IP header, then we need to verify that it actually did so.

Reported by: syzkaller+KMSAN
MFC after: 1 week

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Repository

rG FreeBSD src repository

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Tests Not Applicable

Event Timeline

markj created this revision.Jul 25 2021, 9:46 PM

Herald added subscribers: melifaro, imp. · View Herald TranscriptJul 25 2021, 9:46 PM

markj requested review of this revision.Jul 25 2021, 9:46 PM

Harbormaster completed remote builds in B40669: Diff 92730.Jul 25 2021, 9:46 PM

markj added a reviewer: network.Jul 25 2021, 9:46 PM

Good catch.

This revision is now accepted and ready to land.Jul 25 2021, 10:29 PM

Closed by commit rGba2182520273: rip: Add missing minimum length validation in rip_output() (authored by markj). · Explain WhyJul 26 2021, 8:55 PM

This revision was automatically updated to reflect the committed changes.

markj added a commit: rGba2182520273: rip: Add missing minimum length validation in rip_output().

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sys/

netinet/

raw_ip.c

9 lines

Diff 92761

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rip: Add missing minimum length validationClosedPublicActions