Commit c2b5fdfb authored Mar 11, 2020 by Takashi Iwai Committed by Lee Jones Mar 30, 2020

mfd: aat2870: Use scnprintf() for avoiding potential buffer overflow



There is still one call of sprintf() without checking the proper
buffer overflow in aat2870_dump_reg().  Replace it with scnprintf()
call for covering that.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

parent e3fadb35

drivers/mfd/aat2870-core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -221,7 +221,7 @@ static ssize_t aat2870_dump_reg(struct aat2870_data aat2870, char buf)

		count += sprintf(buf, "aat2870 registers\n");
		for (addr = 0; addr < AAT2870_REG_NUM; addr++) {
		count += sprintf(buf + count, "0x%02x: ", addr);
		count += snprintf(buf + count, PAGE_SIZE - count, "0x%02x: ", addr);
		if (count >= PAGE_SIZE - 1)
		break;

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