Zhang Changzhong 151c72bba1 can: j1939: j1939_xtp_rx_rts_session_new(): abort TP less than 9 bytes ... commit a4fbe70c5cb746441d56b28cf88161d9e0e25378 upstream. The receiver should abort TP if 'total message size' in TP.CM_RTS and TP.CM_BAM is less than 9 or greater than 1785 [1], but currently the j1939 stack only checks the upper bound and the receiver will accept the following broadcast message: vcan1 18ECFF00 [8] 20 08 00 02 FF 00 23 01 vcan1 18EBFF00 [8] 01 00 00 00 00 00 00 00 vcan1 18EBFF00 [8] 02 00 FF FF FF FF FF FF This patch adds check for the lower bound and abort illegal TP. [1] SAE-J1939-82 A.3.4 Row 2 and A.3.6 Row 6. Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol") Link: https://lore.kernel.org/all/1634203601-3460-1-git-send-email-zhangchangzhong@huawei.com Cc: stable@vger.kernel.org Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com> Acked-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-10-27 09:54:27 +02:00
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j1939	can: j1939: j1939_xtp_rx_rts_session_new(): abort TP less than 9 bytes	2021-10-27 09:54:27 +02:00
Kconfig	can: add support of SAE J1939 protocol	2019-09-04 14:22:33 +02:00
Makefile	can: add support of SAE J1939 protocol	2019-09-04 14:22:33 +02:00
af_can.c	net: introduce CAN specific pointer in the struct net_device	2021-04-07 14:47:41 +02:00
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()	2021-07-14 16:53:04 +02:00
gw.c	can: gw: synchronize rcu operations before removing gw job entry	2021-07-14 16:53:04 +02:00
proc.c	net: introduce CAN specific pointer in the struct net_device	2021-04-07 14:47:41 +02:00
raw.c	can: raw: raw_setsockopt(): fix raw_rcv panic for sock UAF	2021-08-04 12:27:38 +02:00