When query for OID_GEN_PHYSICAL_MEDIUM fails, uninitialized pointer
'phym' is being accessed in generic_rndis_bind(), resulting OOPS.
Patch fixes phym to be initialized and setup correctly when
rndis_query() for physical medium fails.
Bug was introduced by following commit:
commit
039ee17d1baabaa21783a0d5ab3e8c6d8c794bdf
Author: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Date: Sun Jan 27 23:34:33 2008 +0200
Reported-by: Dmitri Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
struct rndis_set_c *set_c;
struct rndis_halt *halt;
} u;
struct rndis_set_c *set_c;
struct rndis_halt *halt;
} u;
+ u32 tmp, phym_unspec, *phym;
int reply_len;
unsigned char *bp;
int reply_len;
unsigned char *bp;
goto halt_fail_and_release;
/* Check physical medium */
goto halt_fail_and_release;
/* Check physical medium */
reply_len = sizeof *phym;
retval = rndis_query(dev, intf, u.buf, OID_GEN_PHYSICAL_MEDIUM,
0, (void **) &phym, &reply_len);
reply_len = sizeof *phym;
retval = rndis_query(dev, intf, u.buf, OID_GEN_PHYSICAL_MEDIUM,
0, (void **) &phym, &reply_len);
+ if (retval != 0 || !phym) {
/* OID is optional so don't fail here. */
/* OID is optional so don't fail here. */
- *phym = RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED;
+ phym_unspec = RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED;
+ phym = &phym_unspec;
+ }
if ((flags & FLAG_RNDIS_PHYM_WIRELESS) &&
*phym != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {
if (netif_msg_probe(dev))
if ((flags & FLAG_RNDIS_PHYM_WIRELESS) &&
*phym != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {
if (netif_msg_probe(dev))