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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-01-10 00:34:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-26 02:27:42 +0300 |
| commit | 7b85554c7c2aee91171e038e4d5442ffa130b282 (patch) | |
| tree | fcd005b09a83e7b030e02448b54f2573a7ac570c /drivers/pwm | |
| parent | 00e29df1b44dfbeb06d2df9b7d8927ed1d00720c (diff) | |
| download | linux-7b85554c7c2aee91171e038e4d5442ffa130b282.tar.xz | |
pwm: Fix out-of-bounds access in of_pwm_single_xlate()
commit a297d07b9a1e4fb8cda25a4a2363a507d294b7c9 upstream.
With args->args_count == 2 args->args[2] is not defined. Actually the
flags are contained in args->args[1].
Fixes: 3ab7b6ac5d82 ("pwm: Introduce single-PWM of_xlate function")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/243908750d306e018a3d4bf2eb745d53ab50f663.1704835845.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index d333e7422f4a..9726f96bf763 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -171,7 +171,7 @@ of_pwm_single_xlate(struct pwm_chip *pc, const struct of_phandle_args *args) pwm->args.period = args->args[0]; pwm->args.polarity = PWM_POLARITY_NORMAL; - if (args->args_count == 2 && args->args[2] & PWM_POLARITY_INVERTED) + if (args->args_count == 2 && args->args[1] & PWM_POLARITY_INVERTED) pwm->args.polarity = PWM_POLARITY_INVERSED; return pwm; |