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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 08:37:29 +0000 (09:37 +0100)
commite3b8d98e3758514443b39f9e719df03369f18d2b
tree79a847e86c238c7496d5509c7332cb2f97e90c29tree | snapshot
parentcfc8ed910312c97fbf7ddf3fca8e65cb76894fa5commit | 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;