sudo_mmap_strdup_v1: Fix potential NULL pointer deref

2022-11-19 11:22:14 +08:00
parent 9c694e9a65
commit 1eabf13577
1 changed files with 4 additions and 2 deletions
--- 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;
 }