efihex error checking

0x5a17ed · Nov 19, 2022 · 4a7cfcb · 4a7cfcb
1 parent 1a50e89
commit 4a7cfcb
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/efi/efihex/conv.go b/efi/efihex/conv.go
@@ -17,6 +17,10 @@ package efihex
 const hexTable = "0123456789ABCDEF"
 
 func EncodeBigEndian(dst, src []byte) {
+	if len(src) <= 0 {
+		return
+	}
+
 	_ = dst[len(src)*2-1] // bounds check hint to compiler
 	for i, j := 0, 0; i < len(src); i, j = i+1, j+2 {
 		dst[j], dst[j+1] = hexTable[src[i]>>4], hexTable[src[i]&0x0f]