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| author | Zhang Changzhong <zhangchangzhong@huawei.com> | 2021-10-28 22:38:27 +0800 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2021-11-06 17:29:32 +0100 |
| commit | 164051a6ab5445bd97f719f50b16db8b32174269 (patch) | |
| tree | ee8733528ae40c77f0c9b3e43518734ba4b86611 /kernel/up.c | |
| parent | a79305e156db3d24fcd8eb649cdb3c3b2350e5c2 (diff) | |
can: j1939: j1939_tp_cmd_recv(): check the dst address of TP.CM_BAM
The TP.CM_BAM message must be sent to the global address [1], so add a
check to drop TP.CM_BAM sent to a non-global address.
Without this patch, the receiver will treat the following packets as
normal RTS/CTS transport:
18EC0102#20090002FF002301
18EB0102#0100000000000000
18EB0102#020000FFFFFFFFFF
[1] SAE-J1939-82 2015 A.3.3 Row 1.
Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
Link: https://lore.kernel.org/all/1635431907-15617-4-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>
Diffstat (limited to 'kernel/up.c')
0 files changed, 0 insertions, 0 deletions