diff options
| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2019-01-13 19:31:43 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-31 08:15:43 +0100 |
| commit | 5305c33f73db7548ca33191c6cc5ded4ec79ddf9 (patch) | |
| tree | 09e6c407a9c19f8d25d4ca88dde19612c89c8b4e /drivers | |
| parent | e0bb30468985cfe5783bfb57a9a1282515c8d37d (diff) | |
can: bcm: check timer values before ktime conversion
commit 93171ba6f1deffd82f381d36cb13177872d023f6 upstream.
Kyungtae Kim detected a potential integer overflow in bcm_[rx|tx]_setup()
when the conversion into ktime multiplies the given value with NSEC_PER_USEC
(1000).
Reference: https://marc.info/?l=linux-can&m=154732118819828&w=2
Add a check for the given tv_usec, so that the value stays below one second.
Additionally limit the tv_sec value to a reasonable value for CAN related
use-cases of 400 days and ensure all values to be positive.
Reported-by: Kyungtae Kim <kt0755@gmail.com>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: linux-stable <stable@vger.kernel.org> # >= 2.6.26
Tested-by: Kyungtae Kim <kt0755@gmail.com>
Acked-by: Andre Naujoks <nautsch2@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions