3.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andreas Henriksson <andr...@fatal.se>

[ Upstream commit 13eb2ab2d33c57ebddc57437a7d341995fc9138c ]

When trying to delete a table >= 256 using iproute2 the local table
will be deleted.
The table id is specified as a netlink attribute when it needs more then
8 bits and iproute2 then sets the table field to RT_TABLE_UNSPEC (0).
Preconditions to matching the table id in the rule delete code
doesn't seem to take the "table id in netlink attribute" into condition
so the frh_get_table helper function never gets to do its job when
matching against current rule.
Use the helper function twice instead of peaking at the table value directly.

Originally reported at: http://bugs.debian.org/724783

Reported-by: Nicolas HICHER <nhic...@avencall.com>
Signed-off-by: Andreas Henriksson <andr...@fatal.se>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 net/core/fib_rules.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -460,7 +460,8 @@ static int fib_nl_delrule(struct sk_buff
                if (frh->action && (frh->action != rule->action))
                        continue;
 
-               if (frh->table && (frh_get_table(frh, tb) != rule->table))
+               if (frh_get_table(frh, tb) &&
+                   (frh_get_table(frh, tb) != rule->table))
                        continue;
 
                if (tb[FRA_PRIORITY] &&


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Reply via email to