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authorDileep Katta <dileep.katta@linaro.org>2015-02-13 14:33:42 +0800
committerMarek Vasut <marex@denx.de>2015-02-25 17:47:02 +0100
commite874207134e9d2d5958636f7f32b60e5441ab320 (patch)
tree429c3cd7b1bf2eea826bc752da895878061cf18e
parent9e4b510d40310bf46e09f4edd0a0b6356213df47 (diff)
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fastboot: Correct fastboot_fail and fastboot_okay strings
If the string is copied without NULL termination using strncpy(), then strncat() on the next line, may concatenate the string after some stale (or random) data, if the response string was not zero-initialized. Signed-off-by: Dileep Katta <dileep.katta@linaro.org> Reviewed-by: Steve Rae <srae@broadcom.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
-rw-r--r--common/fb_mmc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/common/fb_mmc.c b/common/fb_mmc.c
index 513b7ab..75899e4 100644
--- a/common/fb_mmc.c
+++ b/common/fb_mmc.c
@@ -23,13 +23,13 @@ static char *response_str;
void fastboot_fail(const char *s)
{
- strncpy(response_str, "FAIL", 4);
+ strncpy(response_str, "FAIL\0", 5);
strncat(response_str, s, RESPONSE_LEN - 4 - 1);
}
void fastboot_okay(const char *s)
{
- strncpy(response_str, "OKAY", 4);
+ strncpy(response_str, "OKAY\0", 5);
strncat(response_str, s, RESPONSE_LEN - 4 - 1);
}