* [PATCH] staging: most: use format specifier "%s" in snprintf
@ 2018-11-09 11:56 Colin King
0 siblings, 0 replies; only message in thread
From: Colin King @ 2018-11-09 11:56 UTC (permalink / raw)
To: Greg Kroah-Hartman, Christian Gromm, devel, linux-kernel; +Cc: kernel-janitors
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
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