4.4-stable review patch. If anyone has any objections, please let me know.
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From: Daniel Micay danielmicay@gmail.com
commit 88a5b39b69ab1828fd4130e2baadd184109cea69 upstream.
Noticed by FORTIFY_SOURCE, this swaps memcpy() for strncpy() to zero-value fill the end of the buffer instead of over-reading a string from .rodata.
Signed-off-by: Daniel Micay danielmicay@gmail.com [kees: wrote commit log] Signed-off-by: Kees Cook keescook@chromium.org Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: Wayne Porter wporter82@gmail.com Signed-off-by: Amit Pundir amit.pundir@linaro.org
--- drivers/staging/rts5208/rtsx_scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/rts5208/rtsx_scsi.c +++ b/drivers/staging/rts5208/rtsx_scsi.c @@ -536,7 +536,7 @@ static int inquiry(struct scsi_cmnd *srb
if (sendbytes > 8) { memcpy(buf, inquiry_buf, 8); - memcpy(buf + 8, inquiry_string, sendbytes - 8); + strncpy(buf + 8, inquiry_string, sendbytes - 8); if (pro_formatter_flag) { /* Additional Length */ buf[4] = 0x33;