diff options
| author | Thomas Graf <tgraf@suug.ch> | 2007-03-25 07:33:27 +0400 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-03-26 05:48:04 +0400 |
| commit | a979101106f549f4ed80d6dcbc35077be34d4346 (patch) | |
| tree | 1a8e9cf8cc6ccb6501233099c89701f2ccb0b36f /net/decnet/dn_fib.c | |
| parent | a0ee18b9b7d3847976c6fb315c06a34fb296de0e (diff) | |
| download | linux-a979101106f549f4ed80d6dcbc35077be34d4346.tar.xz | |
[DECNet] fib: Fix out of bound access of dn_fib_props[]
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 <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/decnet/dn_fib.c')
| -rw-r--r-- | net/decnet/dn_fib.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/decnet/dn_fib.c b/net/decnet/dn_fib.c index 3cbfddc98430..82d58a977e6f 100644 --- a/net/decnet/dn_fib.c +++ b/net/decnet/dn_fib.c @@ -63,7 +63,7 @@ static struct { 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 *dn_fib_create_info(const struct rtmsg *r, struct dn_kern_rta 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; |