base-hw/muen: add explicit array-bounds check

2020-01-07 17:37:35 +01:00 · 2020-01-07 17:37:35 +01:00 · de764d8490
parent 5635c1318c
commit de764d8490
1 changed files with 3 additions and 2 deletions
--- a/repos/base-hw/src/core/spec/x86_64/muen/pic.h
+++ b/repos/base-hw/src/core/spec/x86_64/muen/pic.h
@ -40,12 +40,13 @@ class Board::Pic

 		void irq_occurred(unsigned irq)
 		{
-			isr[irq] = true;
+			if (irq < NR_OF_IRQ)
+				isr[irq] = true;
 		}

 		bool take_request(unsigned &irq)
 		{
-			for (int i = 0; i < 256; i++) {
+			for (int i = 0; i < NR_OF_IRQ; i++) {
 				if (isr[i] == true) {
 					irq = i;
 					isr[i] = false;