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| author | Zhang Changzhong <zhangchangzhong@huawei.com> | 2021-10-14 17:26:40 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-27 09:54:27 +0200 |
| commit | 151c72bba1297d3ca1e56203ea008b7edfc6a70d (patch) | |
| tree | b3a09684e9d1185f8fe7a15beb2e38281f77398b /fs/ceph/super.h | |
| parent | 0ddf781882acf4292f88e19f7806a28f5a26fbdb (diff) | |
| download | linux-stable-151c72bba1297d3ca1e56203ea008b7edfc6a70d.tar.gz linux-stable-151c72bba1297d3ca1e56203ea008b7edfc6a70d.tar.bz2 linux-stable-151c72bba1297d3ca1e56203ea008b7edfc6a70d.zip | |
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: 9d71dd0c7009 ("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>
Diffstat (limited to 'fs/ceph/super.h')
0 files changed, 0 insertions, 0 deletions