From: Colin King <colin.king@canonical.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Christian Gromm <christian.gromm@microchip.com>,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org
Subject: [PATCH] staging: most: use format specifier "%s" in snprintf
Date: Fri, 9 Nov 2018 11:56:45 +0000 [thread overview]
Message-ID: <20181109115645.18279-1-colin.king@canonical.com> (raw)
From: Colin Ian King <colin.king@canonical.com>
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>
---
drivers/staging/most/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/most/core.c b/drivers/staging/most/core.c
index 6a18cf73c85e..18936cdb1083 100644
--- 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");
}
--
2.19.1
reply other threads:[~2018-11-09 11:56 UTC|newest]
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