hwmon: (pmbus/max20730) use scnprintf() instead of snprintf()

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The snprintf() function returns the number of characters which would
have been printed if there were enough space, but the scnprintf()
returns the number of characters which were actually printed.  If the
buffer is not large enough, then using snprintf() would result in a
read overflow and an information leak.

Fixes: 8910c0bd53 ("hwmon: (pmbus/max20730) add device monitoring via debugfs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20201022070824.GC2817762@mwanda
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

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Dan Carpenter 2020-10-22 10:08:24 +03:00 • committed by Guenter Roeck

parent 3650b228f8

commit 402dab548d

1 changed files with 13 additions and 13 deletions

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drivers/hwmon/pmbus/max20730.c

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