From: Takashi Iwai <tiwai@suse.de>
To: Zhang Rui <rui.zhang@intel.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-pm@vger.kernel.org
Subject: Re: [PATCH] thermal: int340x_thermal: Use scnprintf() for avoiding potential buffer overflow
Date: Thu, 19 Mar 2020 16:50:18 +0100 [thread overview]
Message-ID: <s5hfte4uyx1.wl-tiwai@suse.de> (raw)
In-Reply-To: <20200311092718.24052-1-tiwai@suse.de>
On Wed, 11 Mar 2020 10:27:18 +0100,
Takashi Iwai wrote:
>
> Since snprintf() returns the would-be-output size instead of the
> actual output size, the succeeding calls may go beyond the given
> buffer limit. Fix it by replacing with scnprintf().
>
> Signed-off-by: Takashi Iwai <tiwai@suse.de>
A gentle reminder for this forgotten patch.
Let me know if any further change is needed.
thanks,
Takashi
> ---
> drivers/thermal/intel/int340x_thermal/int3400_thermal.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> index efae0c02d898..529df7174239 100644
> --- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> +++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> @@ -65,7 +65,7 @@ static ssize_t available_uuids_show(struct device *dev,
> for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
> if (priv->uuid_bitmap & (1 << i))
> if (PAGE_SIZE - length > 0)
> - length += snprintf(&buf[length],
> + length += scnprintf(&buf[length],
> PAGE_SIZE - length,
> "%s\n",
> int3400_thermal_uuids[i]);
> --
> 2.16.4
>
next prev parent reply other threads:[~2020-03-19 15:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-11 9:27 [PATCH] thermal: int340x_thermal: Use scnprintf() for avoiding potential buffer overflow Takashi Iwai
2020-03-19 15:50 ` Takashi Iwai [this message]
2020-03-19 16:05 ` Pandruvada, Srinivas
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