lpc43xx: Fixed a bug in lpc43x0_detach() which leads to a crash via N…

…ULL dereference when Flash detection fails
blackmagic-debug · Jul 26, 2023 · 2677a24 · 2677a24
1 parent 2cc1b94
commit 2677a24
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/src/target/lpc43xx.c b/src/target/lpc43xx.c
@@ -680,10 +680,12 @@ static bool lpc43x0_attach(target_s *const target)
 static void lpc43x0_detach(target_s *const target)
 {
  lpc43x0_priv_s *const priv = (lpc43x0_priv_s *)target->target_storage;
- free(priv->flash->flash_high);
- free(priv->flash);
- priv->flash = NULL;
- target->flash = NULL;
+ if (priv->flash) {
+ free(priv->flash->flash_high);
+ free(priv->flash);
+ priv->flash = NULL;
+ target->flash = NULL;
+ }
  cortexm_detach(target);
 }