Merge pull request #29 from kienvo/fix-fb

fix: Out of bounds on framebuffer access

1 files changed, 4 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index 6110e2a..d3a959b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -188,6 +188,10 @@ void TMR0_IRQHandler(void)
 			if ((brightness + 1) % 2) 

 				leds_releaseall();

 		} else {

+			if (i + fb->scroll/SCROLL_IRATIO >= fb->width) {

+				leds_releaseall();

+				return;

+			}

 			led_write2dcol(i/2, 

 				fb->buf[i+ fb->scroll/SCROLL_IRATIO], 

 				fb->buf[i+ fb->scroll/SCROLL_IRATIO + 1]);