staging: most: use format specifier "%s" in snprintf

commit 13c45007e0a87e912da21223599583fdea677914 upstream.

Passing string ch_data_type[i].name as the format specifier is
potentially hazardous because it could (although very unlikely to)
have a format specifier embedded in it causing issues when parsing
the non-existent arguments to these.  Follow best practice by using
the "%s" format string for the string.

Cleans up clang warning:
format string is not a string literal (potentially insecure) [-Wformat-security]

Fixes: e7f2b70fd3a9 ("staging: most: replace multiple if..else with table lookup")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/most/core.c b/drivers/staging/most/core.c
index f4c4646..52ad627 100644 (file)
--- a/drivers/staging/most/core.c
+++ b/drivers/staging/most/core.c
@@ -351,7 +351,7 @@ static ssize_t set_datatype_show(struct device *dev,
 
        for (i = 0; i < ARRAY_SIZE(ch_data_type); i++) {
                if (c->cfg.data_type & ch_data_type[i].most_ch_data_type)
-                       return snprintf(buf, PAGE_SIZE, ch_data_type[i].name);
+                       return snprintf(buf, PAGE_SIZE, "%s", ch_data_type[i].name);
        }
        return snprintf(buf, PAGE_SIZE, "unconfigured\n");
 }