From 8416bdb485f5bf7a52569261714476bc12875f9d Mon Sep 17 00:00:00 2001
From: iceman1001 <iceman@iuse.se>
Date: Thu, 10 Oct 2019 12:41:12 +0200
Subject: [PATCH] coverity 226278

---
 armsrc/appmain.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index 248346b4f..4218d93a0 100644
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -1568,9 +1568,10 @@ static void PacketReceived(PacketCommandNG *packet) {
                 BigBuf_Clear_ext(false);
                 BigBuf_free();
             }
+            uint16_t offset = MIN(BIGBUF_SIZE - PM3_CMD_DATA_SIZE - 3, payload->offset);
 
             uint8_t *mem = BigBuf_get_addr();
-            memcpy(mem + payload->offset, &payload->data, PM3_CMD_DATA_SIZE - 3);
+            memcpy(mem + offset, &payload->data, PM3_CMD_DATA_SIZE - 3);
             reply_ng(CMD_LF_UPLOAD_SIM_SAMPLES, PM3_SUCCESS, NULL, 0);
             break;
         }