[FFmpeg-devel] [PATCH] tools/zmqsend: Avoid mem copy past the end of input buffer

[Andriy Gelman]

From: Andriy Gelman <andriy.gelman at gmail.com>

This patch avoids a read past the end of the input buffer in memcpy since the size
of the received zmq message is recv_buf_size - 1.
---
 tools/zmqsend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/zmqsend.c b/tools/zmqsend.c
index 7bd7fe4199..f26fa9c1c2 100644
--- a/tools/zmqsend.c
+++ b/tools/zmqsend.c
@@ -155,7 +155,7 @@ int main(int argc, char **argv)
         ret = 1;
         goto end;
     }
-    memcpy(recv_buf, zmq_msg_data(&msg), recv_buf_size);
+    memcpy(recv_buf, zmq_msg_data(&msg), recv_buf_size - 1);
     recv_buf[recv_buf_size-1] = 0;
     printf("%s\n", recv_buf);
     zmq_msg_close(&msg);
-- 
2.22.0