[WIN32K:NTUSER] Add missing probe in NtUserGetClassName.

2026-05-30 14:34:57 +08:00 · 2019-12-29 16:14:17 +01:00
parent 771b87dc8f
commit be92be2e37
1 changed files with 6 additions and 0 deletions
--- a/win32ss/user/ntuser/class.c
+++ b/win32ss/user/ntuser/class.c
@@ -2815,6 +2815,12 @@ NtUserGetClassName (IN HWND hWnd,
        {
            ProbeForWriteUnicodeString(ClassName);
            CapturedClassName = *ClassName;
+            if (CapturedClassName.Length != 0)
+            {
+                ProbeForRead(CapturedClassName.Buffer,
+                             CapturedClassName.Length,
+                             sizeof(WCHAR));
+            }

            /* Get the class name */
            Ret = UserGetClassName(Window->pcls,