Fixes a typo which caused fib_props[] to have the wrong size
and makes sure the value used to index the array which is
provided by userspace via netlink is checked to avoid out of
bound access.
Signed-off-by: Thomas Graf <[EMAIL PROTECTED]>
Index: net-2.6/net/decnet/dn_fib.c
===================================================================
--- net-2.6.orig/net/decnet/dn_fib.c 2006-11-29 13:35:51.000000000 +0100
+++ net-2.6/net/decnet/dn_fib.c 2006-11-29 13:36:17.000000000 +0100
@@ -63,7 +63,7 @@
{
int error;
u8 scope;
-} dn_fib_props[RTA_MAX+1] = {
+} dn_fib_props[RTN_MAX+1] = {
[RTN_UNSPEC] = { .error = 0, .scope = RT_SCOPE_NOWHERE },
[RTN_UNICAST] = { .error = 0, .scope = RT_SCOPE_UNIVERSE },
[RTN_LOCAL] = { .error = 0, .scope = RT_SCOPE_HOST },
@@ -276,6 +276,9 @@
struct dn_fib_info *ofi;
int nhs = 1;
+ if (r->rtm_type > RTN_MAX)
+ goto err_inval;
+
if (dn_fib_props[r->rtm_type].scope > r->rtm_scope)
goto err_inval;
-
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