diff --git a/recipes-qt/qt6/qtbase/0006-qnumeric-disable-use-of-stdckdint.h.patch b/recipes-qt/qt6/qtbase/0006-qnumeric-disable-use-of-stdckdint.h.patch
new file mode 100644
index 0000000..2591b32
--- /dev/null
+++ b/recipes-qt/qt6/qtbase/0006-qnumeric-disable-use-of-stdckdint.h.patch
@@ -0,0 +1,33 @@
+From d194661b728c0fa8c9d7ef6a8961b6eb7077ceb9 Mon Sep 17 00:00:00 2001
+From: Samuli Piippo <samuli.piippo@qt.io>
+Date: Mon, 27 Oct 2025 13:11:00 +0000
+Subject: [PATCH] qnumeric: disable use of stdckdint.h
+
+Similar to GCC14 (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121811),
+GCC15 has problem using stdckdint.h in Yocto setup as default include
+paths are ordered so that the C header is found first.
+
+| nativesdk-qtbase/6.11.0/sources/qtbase-6.11.0/src/corelib/global/qnumeric.h: In function 'constexpr std::enable_if_t<((bool)is_unsigned_v<T>), bool> qAddOverflow(T, T, T*)':
+| nativesdk-qtbase/6.11.0/sources/qtbase-6.11.0/src/corelib/global/qnumeric.h:282:12: error: '_Bool' was not declared in this scope [-Wtemplate-body]
+|   282 |     return ckd_add(r, v1, v2);
+|       |            ^~~~~~~
+
+Upstream-Status: Inappropriate [oe specific]
+Change-Id: Ic158ebdc81aa31bed54b703c7ee2c3a436c51c90
+---
+ src/corelib/global/qnumeric.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/corelib/global/qnumeric.h b/src/corelib/global/qnumeric.h
+index 6caf3510f8a..cea5738e524 100644
+--- a/src/corelib/global/qnumeric.h
++++ b/src/corelib/global/qnumeric.h
+@@ -25,7 +25,7 @@
+ // usable. Its provided functions are in the global namespace even in C++ (not
+ // std::) because they are sometimes macros.
+ #  include <QtCore/qstdlibdetection.h>
+-#  if defined(Q_CC_GNU_ONLY) && (defined(Q_STL_LIBCPP) || Q_CC_GNU_ONLY < 1500)
++#  if defined(Q_CC_GNU_ONLY)
+ //   broken - https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121811
+ #  elif defined(Q_OS_FREEBSD) && __FreeBSD_version <= 1500000
+ //   broken - https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=290299
diff --git a/recipes-qt/qt6/qtbase_git.bb b/recipes-qt/qt6/qtbase_git.bb
index 1914105..f4d0958 100644
--- a/recipes-qt/qt6/qtbase_git.bb
+++ b/recipes-qt/qt6/qtbase_git.bb
@@ -24,6 +24,7 @@ SRC_URI += "\
     file://0001-Add-linux-oe-g-platform.patch \
     file://0004-Fix-qt.toolchain.cmake-for-SDK-use.patch \
     file://0005-testlib-don-t-track-the-build-or-source-directories.patch \
+    file://0006-qnumeric-disable-use-of-stdckdint.h.patch \
 "
 SRC_URI:append:class-native = "\
     file://0002-qlibraryinfo-allow-to-set-qt.conf-from-the-outside-u.patch \