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Differential D19968

Improve checksum computation via IPV6_CHECKSUM for received packets
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Authored by tuexen on Apr 19 2019, 4:42 PM.
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rS346402: When a checksum has to be computed for a received IPv6 packet because it
Summary

When computing the checksum for a received packet, ensure that you have enough bytes in the packet such that it contains the checksum. This fixes in particular syzbot, which was injecting an empty (plen = 0) packet, which resulted in a panic.

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rS FreeBSD src repository - subversion
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Event Timeline

tuexen created this revision.Apr 19 2019, 4:42 PM
Herald added subscribers: ae, imp. · View Herald TranscriptApr 19 2019, 4:42 PM
Harbormaster completed remote builds in B23768: Diff 56387.Apr 19 2019, 4:42 PM
bz accepted this revision.Apr 19 2019, 5:06 PM

Again can you please mention "... in rip6_input() ..." in the commit message.

This revision is now accepted and ready to land.Apr 19 2019, 5:06 PM
Closed by commit rS346402: When a checksum has to be computed for a received IPv6 packet because it (authored by tuexen). · Explain WhyApr 19 2019, 5:28 PM
This revision was automatically updated to reflect the committed changes.

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head/
sys/
netinet6/
3 lines

Diff 56392

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head/sys/netinet6/raw_ip6.c

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