On Sat, Apr 02, 2022 at 11:12:39AM +0200, Oliver Hartkopp wrote:
> From: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>
>
> commit 3ea566422cbde9610c2734980d1286ab681bb40e upstream.
>
> Syzbot created an environment that lead to a state machine status that
> can not be reached with a compliant CAN ID address configuration.
> The provided address information consisted of CAN ID 0x6000001 and 0xC28001
> which both boil down to 11 bit CAN IDs 0x001 in sending and receiving.
>
> Sanitize the SFF/EFF CAN ID values before performing the address checks.
>
> Cc: stable@xxxxxxxxxxxxxxx # v5.10 - v5.17
> Fixes: e057dd3fc20f ("can: add ISO 15765-2:2016 transport protocol")
> Link: https://lore.kernel.org/all/20220316164258.54155-1-socketcan@xxxxxxxxxxxx
> Reported-by: syzbot+2339c27f5c66c652843e@xxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>
> Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
> ---
> net/can/isotp.c | 38 ++++++++++++++++++++------------------
> 1 file changed, 20 insertions(+), 18 deletions(-)
Now queued up, thanks.
greg k-h
