Update sprintf in serial_show frunction to scnprintf command to prevent sysfs buffer overflow (buffer always is PAGE_SIZE bytes). Signed-off-by: Viacheslav Bocharov <adeep@xxxxxxxxx> --- drivers/firmware/meson/meson_sm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/meson/meson_sm.c b/drivers/firmware/meson/meson_sm.c index ed60f1103053..c1c694b485ee 100644 --- a/drivers/firmware/meson/meson_sm.c +++ b/drivers/firmware/meson/meson_sm.c @@ -265,7 +265,7 @@ static ssize_t serial_show(struct device *dev, struct device_attribute *attr, return ret; } - ret = sprintf(buf, "%12phN\n", &id_buf[SM_CHIP_ID_OFFSET]); + ret = scnprintf(buf, PAGE_SIZE, "%12phN\n", &id_buf[SM_CHIP_ID_OFFSET]); kfree(id_buf); -- 2.34.1
