Norbert Slusarek aaf473d010 can: j1939: j1939_sk_setsockopt(): prevent allocation of j1939 filter for optlen == 0 ... If optval != NULL and optlen == 0 are specified for SO_J1939_FILTER in j1939_sk_setsockopt(), memdup_sockptr() will return ZERO_PTR for 0 size allocation. The new filter will be mistakenly assigned ZERO_PTR. This patch checks for optlen != 0 and filter will be assigned NULL in case of optlen == 0. Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol") Link: https://lore.kernel.org/r/20210620123842.117975-1-nslusarek@gmx.net Signed-off-by: Norbert Slusarek <nslusarek@gmx.net> Acked-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>		2021-06-24 08:28:51 +02:00
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j1939	can: j1939: j1939_sk_setsockopt(): prevent allocation of j1939 filter for optlen == 0	2021-06-24 08:28:51 +02:00
af_can.c	net: introduce CAN specific pointer in the struct net_device	2021-02-24 14:32:15 -08:00
af_can.h	can: introduce CAN midlayer private and allocate it automatically	2019-09-04 13:29:14 +02:00
bcm.c	can: bcm: delay release of struct bcm_op after synchronize_rcu()	2021-06-19 23:47:32 +02:00
gw.c	can: gw: synchronize rcu operations before removing gw job entry	2021-06-19 23:53:43 +02:00
isotp.c	can: isotp: isotp_release(): omit unintended hrtimer restart on socket release	2021-06-19 23:54:00 +02:00
Kconfig	net: remove redundant 'depends on NET'	2021-01-27 17:04:12 -08:00
Makefile	can: add ISO 15765-2:2016 transport protocol	2020-10-07 23:18:33 +02:00
proc.c	can: proc: fix rcvlist_* header alignment on 64-bit system	2021-04-25 19:43:00 +02:00
raw.c	can: bcm/raw/isotp: use per module netdevice notifier	2021-06-16 12:52:18 +02:00