Page MenuHomeFreeBSD

netinet6: perform out-of-bounds check for lo0 multicast statitics
ClosedPublic

Authored by melifaro on Jul 4 2022, 8:03 PM.

Details

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.

Diff Detail

Repository
rG FreeBSD src repository
Lint
Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.