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Differential D35715

netinet6: perform out-of-bounds check for lo0 multicast statitics
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Authored by melifaro on Jul 4 2022, 8:03 PM.

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rGfc850f4f7d44: netinet6: perform out-of-bounds check for loX multicast statistics
rG0ed72537857b: netinet6: perform out-of-bounds check for loX multicast statistics

Summary

Currently, some per-mbuf multicast statistic is stored in per-interface ip6stat.ip6s_m2m[] array of size 32 (IP6S_M2MMAX).
Check that loopback ifindex falls within 0.. IP6S_M2MMAX-1 range to avoid silent data corruption.
the latter cat happen with large number of VNETs.

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rS FreeBSD src repository - subversion

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Buildable 46263
Build 43152: arc lint + arc unit

Event Timeline

melifaro created this revision.Jul 4 2022, 8:03 PM

Herald added subscribers: glebius, bz, ae, imp. · View Herald TranscriptJul 4 2022, 8:03 PM

melifaro requested review of this revision.Jul 4 2022, 8:03 PM

Harbormaster completed remote builds in B46263: Diff 107767.Jul 4 2022, 8:03 PM

melifaro edited the summary of this revision. (Show Details)Jul 4 2022, 8:11 PM

melifaro added a reviewer: network.

glebius accepted this revision.Jul 4 2022, 8:12 PM

This revision is now accepted and ready to land.Jul 4 2022, 8:12 PM

Closed by commit rG0ed72537857b: netinet6: perform out-of-bounds check for loX multicast statistics (authored by melifaro). · Explain WhyJul 5 2022, 11:45 AM

This revision was automatically updated to reflect the committed changes.

melifaro added a commit: rG0ed72537857b: netinet6: perform out-of-bounds check for loX multicast statistics.

melifaro added a commit: rGfc850f4f7d44: netinet6: perform out-of-bounds check for loX multicast statistics.Jan 13 2023, 9:31 PM

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sys/

netinet6/

11 lines

Diff 107767

sys/netinet6/ip6_input.c

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