Changeset 107109 in vbox

Timestamp:

Nov 22, 2024 9:51:05 AM (4 months ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

166076

Message:

VMM/GIC: Don try reading past the interrupt routing table, bugref:3409 bugref:10404

File:

• trunk/src/VBox/VMM/VMMAll/GICAll.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/GICAll.cpp

@@ -389 +389 @@
     if (offReg >= GIC_DIST_REG_IROUTERn_OFF_START && offReg <= GIC_DIST_REG_IROUTERn_OFF_LAST)
     {
-        *puValue = pThis->au32IntRouting[(offReg - GIC_DIST_REG_IROUTERn_OFF_START) / 4];
+        uint32_t idxEntry = (offReg - GIC_DIST_REG_IROUTERn_OFF_START) / 4;
+        if (RT_LIKELY(idxEntry < RT_ELEMENTS(pThis->au32IntRouting)))
+            *puValue = pThis->au32IntRouting[idxEntry];
+        else
+            *puValue = 0;
         return VINF_SUCCESS;
     }