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can: dev: __can_get_echo_skb(): Don't crash the kernel if can_priv::echo_skb is acces...
authorMarc Kleine-Budde <mkl@pengutronix.de>
Wed, 31 Oct 2018 13:05:26 +0000 (14:05 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 1 Dec 2018 08:47:59 +0000 (09:47 +0100)
commita02dbcb5c7cf594657d063fef21326f32f2448aa
tree2004b2c9cd8be7df23b17403c212d8537f587047tree | snapshot
parentffd6e56d44d7c4685bdcaefe94151f4fdf046db2commit | diff
can: dev: __can_get_echo_skb(): Don't crash the kernel if can_priv::echo_skb is accessed out of bounds

commit e7a6994d043a1e31d5b17706a22ce33d2a3e4cdc upstream.

If the "struct can_priv::echo_skb" is accessed out of bounds would lead
to a kernel crash. Better print a sensible warning message instead and
try to recover.

Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/can/dev.c diff | blob | history
Domain: System / Kernel; Licenses: GPL-2.0;