Fix pointer arithmetic on canary placement

Zondax · Oct 10, 2024 · fa7c45e · fa7c45e
1 parent 8a087f3
commit fa7c45e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/zxcanary.c b/src/zxcanary.c
@@ -20,7 +20,7 @@
 
 // This symbol is defined by the link script to be at the start of the stack area.
 extern unsigned int app_stack_canary;
-#define ZONDAX_CANARY (*((volatile uint32_t*) (&app_stack_canary + sizeof(uint32_t))))
+#define ZONDAX_CANARY (*((volatile uint32_t*) (((uint8_t*) &app_stack_canary) + sizeof(uint32_t))))
 
 #if defined(HAVE_ZONDAX_CANARY)
 #include "errors.h"