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ppp_async: limit MRU to 64K
[linux-2.6-microblaze.git]
/
drivers
/
net
/
ppp
/
ppp_async.c
diff --git
a/drivers/net/ppp/ppp_async.c
b/drivers/net/ppp/ppp_async.c
index
840da92
..
125793d
100644
(file)
--- a/
drivers/net/ppp/ppp_async.c
+++ b/
drivers/net/ppp/ppp_async.c
@@
-460,6
+460,10
@@
ppp_async_ioctl(struct ppp_channel *chan, unsigned int cmd, unsigned long arg)
case PPPIOCSMRU:
if (get_user(val, p))
break;
+ if (val > U16_MAX) {
+ err = -EINVAL;
+ break;
+ }
if (val < PPP_MRU)
val = PPP_MRU;
ap->mru = val;