On 14.10.2021 17:26:40, Zhang Changzhong wrote:
> 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: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
> Signed-off-by: Zhang Changzhong <zhangchangzhong@xxxxxxxxxx>
Applied to linux-can/testing, added stable on Cc.
regards,
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
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