diff --git a/NetworkManager.spec b/NetworkManager.spec
index a2e6923b5be1f141160609d5523b05c1c565d7db..f989f3b094cb47233c7ef8a99890258329b2e066 100644
--- a/NetworkManager.spec
+++ b/NetworkManager.spec
@@ -51,7 +51,7 @@
 Name:             NetworkManager
 Version:          1.44.2
 Epoch:            1
-Release:          3
+Release:          4
 Summary:          4
 License:          GPLv2+
 URL:              https://networkmanager.dev/
@@ -67,6 +67,7 @@ Patch6:           0001-add-NM-to-support-wifi6.patch
 
 Patch6000:        backport-lldp-fix-crash-dereferencing-NULL-pointer-during-deb.patch
 Patch6001:        backport-lldp-fix-multiple-access-to-argument-in-logging-macr.patch
+Patch6002:        backport-mptcp-fix-error-handling-rp_filter-when-kernel-dont-support-mptcp.patch
 
 BuildRequires:    gcc libtool pkgconfig automake autoconf intltool gettext-devel ppp-devel gnutls-devel
 BuildRequires:    dbus-devel glib2-devel gobject-introspection-devel jansson-devel
@@ -551,6 +552,12 @@ fi
 %{_datadir}/gtk-doc/html/NetworkManager/*
 
 %changelog
+* Mon Sep 15 2025 qinxue <qinxue6@h-partners.com> - 1:1.44.2-4
+- Type:bugfix
+- CVE:NA
+- SUG:NA
+- DESC:mptcp fix error handling rp_filter when kernel don't support mptcp
+
 * Wed Oct 16 2024 zhongxuan <zhongxuan2@huawei.com> - 1:1.44.2-3
 - Type:CVE
 - CVE:CVE-2024-6501
diff --git a/backport-mptcp-fix-error-handling-rp_filter-when-kernel-dont-support-mptcp.patch b/backport-mptcp-fix-error-handling-rp_filter-when-kernel-dont-support-mptcp.patch
new file mode 100644
index 0000000000000000000000000000000000000000..0da97eac189eade66f223ec99fd52c21faaa79c2
--- /dev/null
+++ b/backport-mptcp-fix-error-handling-rp_filter-when-kernel-dont-support-mptcp.patch
@@ -0,0 +1,40 @@
+From 9c42177d0936f9cbfc0dcbfb994821dad8322ed7 Mon Sep 17 00:00:00 2001
+From: eaglegai <eaglegai@163.com>
+Date: Tue, 24 Dec 2024 23:03:06 +0800
+Subject: [PATCH] mptcp: fix error handling rp_filter when kernel don't support
+ mptcp
+
+When the kernel don't support mptcp, NetworkManager should disable mptcp
+and shouldn't change rp_filter from 1 to 2. However, when checking file
+/proc/sys/net/mptcp/enabled, val v's type is defined to guint32, and
+nm_platform_sysctl_get_int32 return -1, v becomes a very large number
+and can't set mptcp_flags to NM_MPTCP_FLAGS_DISABLED.
+
+https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/1686
+https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2093
+
+Fixes: c00873e08f ('mptcp: rework "connection.mptcp-flags" for enabling MPTCP')
+
+Conflict:no
+Reference:https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/commit/9c42177d0936f9cbfc0dcbfb994821dad8322ed7
+
+---
+ src/core/devices/nm-device.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/core/devices/nm-device.c b/src/core/devices/nm-device.c
+index ba3e07c9a39..8bd73ea1bb8 100644
+--- a/src/core/devices/nm-device.c
++++ b/src/core/devices/nm-device.c
+@@ -1489,7 +1489,7 @@ _prop_get_connection_mptcp_flags(NMDevice *self)
+ 
+     if (!NM_FLAGS_HAS(mptcp_flags, NM_MPTCP_FLAGS_DISABLED)) {
+         if (!NM_FLAGS_HAS(mptcp_flags, NM_MPTCP_FLAGS_ALSO_WITHOUT_SYSCTL)) {
+-            guint32 v;
++            gint32 v;
+ 
+             /* If enabled, but without "also-without-sysctl", then MPTCP is still
+              * disabled, if the sysctl says so...
+-- 
+GitLab
+