>Number: 159603
>Category: kern
>Synopsis: [patch] in_ifscrubprefix() - network route can be installed
>for interfaces marked down
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Aug 08 13:20:13 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Svatopluk Kraus
>Release: current
>Organization:
>Environment:
>Description:
If interface goes down, then network route is deleted via in_ifscrubprefix()
and can be replaced by same one on another interface. Interfaces marked down
are not skipped during lookup.
>How-To-Repeat:
>Fix:
Index: sys/netinet/in.c
===================================================================
--- sys/netinet/in.c (revision 224705)
+++ sys/netinet/in.c (working copy)
@@ -1163,7 +1163,8 @@
p.s_addr &= ia->ia_sockmask.sin_addr.s_addr;
}
- if (prefix.s_addr != p.s_addr)
+ if ((prefix.s_addr != p.s_addr) ||
+ !(ia->ia_ifp->if_flags & IFF_UP))
continue;
/*
>Release-Note:
>Audit-Trail:
>Unformatted:
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