strcpy() performs no bounds checking on the destination buffer. This could result in linear overflows beyond the end of the buffer, leading to all kinds of misbehaviors. The safe replacement is strscpy() but in this case it is simpler to add NULL to the first position since we want to empty the string.
This is a previous step in the path to remove the strcpy() function.
Signed-off-by: Len Baker len.baker@gmx.com --- drivers/staging/fbtft/fbtft-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c index 3723269890d5..b8791806cb20 100644 --- a/drivers/staging/fbtft/fbtft-core.c +++ b/drivers/staging/fbtft/fbtft-core.c @@ -1037,7 +1037,7 @@ int fbtft_init_display(struct fbtft_par *par) case -1: i++; /* make debug message */ - strcpy(msg, ""); + msg[0] = 0; j = i + 1; while (par->init_sequence[j] >= 0) { sprintf(str, "0x%02X ", par->init_sequence[j]); -- 2.25.1