[PATCH 6.6 406/583] pwm: Fix out-of-bounds access in of_pwm_single_xlate()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/243908750d306e018a3d4bf2eb745d53ab50f663.1704835845.git.u.kleine-koenig@xxxxxxxxxxxxxx
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/pwm/core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -176,7 +176,7 @@ of_pwm_single_xlate(struct pwm_chip *chi
 	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;






[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux