sudo_mmap_strdup_v1: Fix potential NULL pointer deref

sudo-project · Nov 20, 2022 · 1eabf13 · 1eabf13
1 parent 9c694e9
commit 1eabf13
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/lib/util/mmap_alloc.c b/lib/util/mmap_alloc.c
@@ -116,8 +116,10 @@ sudo_mmap_strdup_v1(const char *str)
 	return NULL;
     }
     newstr = sudo_mmap_alloc_v1(len + 1);
-    memcpy(newstr, str, len);
-    newstr[len] = '\0';
+    if (newstr != NULL) {
+        memcpy(newstr, str, len);
+        newstr[len] = '\0';
+    }
 
     return newstr;
 }