diff --git a/Quit-while-source-file-increased.patch b/backport-Quit-while-source-file-increased.patch
similarity index 100%
rename from Quit-while-source-file-increased.patch
rename to backport-Quit-while-source-file-increased.patch
diff --git a/backport-fix-a-coredump-in-TorrentTracker-fix-513.patch b/backport-fix-a-coredump-in-TorrentTracker-fix-513.patch
new file mode 100644
index 0000000..387ebb4
--- /dev/null
+++ b/backport-fix-a-coredump-in-TorrentTracker-fix-513.patch
@@ -0,0 +1,33 @@
+From d67fc14d085849a6b0418bb3e912fea2e94c18d1 Mon Sep 17 00:00:00 2001
+From: "Alexander V. Lukyanov" <lavv17f@gmail.com>
+Date: Sat, 28 Nov 2020 20:09:11 +0300
+Subject: [PATCH] fix a coredump in TorrentTracker (fix #513)
+
+Conflict: NA
+Reference: https://github.com/lavv17/lftp/commit/d67fc14d085849a6b0418bb3e912fea2e94c18d1
+---
+ src/TorrentTracker.cc | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/src/TorrentTracker.cc b/src/TorrentTracker.cc
+index f867c334..30b531ce 100644
+--- a/src/TorrentTracker.cc
++++ b/src/TorrentTracker.cc
+@@ -121,7 +121,7 @@ bool TorrentTracker::AddPeer(const xstring& addr,int port) const
+ int TorrentTracker::Do()
+ {
+    int m=STALL;
+-   if(Failed())
++   if(Failed() || !backend)
+       return m;
+    if(backend && backend->IsActive()) {
+       if(tracker_timeout_timer.Stopped()) {
+@@ -165,6 +165,8 @@ void TorrentTracker::Start()
+ }
+ void TorrentTracker::SendTrackerRequest(const char *event)
+ {
++   if(!backend)
++      return;
+    backend->SendTrackerRequest(event);
+    tracker_timeout_timer.Reset();
+ }
diff --git a/backport-fix-a-null-deref-on-exit.patch b/backport-fix-a-null-deref-on-exit.patch
new file mode 100644
index 0000000..d360a83
--- /dev/null
+++ b/backport-fix-a-null-deref-on-exit.patch
@@ -0,0 +1,47 @@
+From ced8ab2f95695aee05424e9aa206cd59a3f90888 Mon Sep 17 00:00:00 2001
+From: "Alexander V. Lukyanov" <lavv17f@gmail.com>
+Date: Mon, 5 Jul 2021 19:59:33 +0300
+Subject: [PATCH] fix a null deref on exit
+
+Conflict: NA
+Reference: https://github.com/lavv17/lftp/commit/ced8ab2f95695aee05424e9aa206cd59a3f90888
+
+---
+ src/Job.cc    | 7 +++++--
+ src/SMTask.cc | 1 +
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/src/Job.cc b/src/Job.cc
+index 63be3fb5..b783eae4 100644
+--- a/src/Job.cc
++++ b/src/Job.cc
+@@ -365,12 +365,15 @@ xstring& Job::FormatJobs(xstring& s,int verbose,int indent)
+ 
+ void  Job::BuryDoneJobs()
+ {
+-   xlist_for_each_safe(Job,all_jobs,node,scan,next)
++   xarray<Job*> to_bury;
++   xlist_for_each(Job,all_jobs,node,scan)
+    {
+       if((scan->parent==this || scan->parent==0) && scan->jobno>=0
+ 		  && scan->Done())
+-	 scan->DeleteLater();
++	 to_bury.append(scan);
+    }
++   for(int i=0; i<to_bury.count(); i++)
++      to_bury[i]->DeleteLater();
+    CollectGarbage();
+ }
+ 
+diff --git a/src/SMTask.cc b/src/SMTask.cc
+index b8a84e2f..435ab8c3 100644
+--- a/src/SMTask.cc
++++ b/src/SMTask.cc
+@@ -129,6 +129,7 @@ void SMTask::DeleteLater()
+ {
+    if(deleting)
+       return;
++   DEBUG(("DeleteLater(%p) from %p\n",this,current));
+    deleting=true;
+    deleted_tasks.add_tail(deleted_tasks_node);
+    PrepareToDie();
diff --git a/lftp.spec b/lftp.spec
index c0fba45..35ee89a 100644
--- a/lftp.spec
+++ b/lftp.spec
@@ -1,7 +1,7 @@
 Summary:	A sophisticated file transfer program
 Name:		lftp
 Version:	4.9.2
-Release:	4
+Release:	5
 License:	GPLv3+
 URL:		http://lftp.yar.ru/
 Source0:        http://lftp.yar.ru/ftp/%{name}-%{version}.tar.xz
@@ -10,9 +10,12 @@ BuildRequires:	gettext readline-devel, zlib-devel, gcc-c++ desktop-file-utils
 BuildRequires:  chrpath
 
 Patch0:         lftp-4.0.9-date_fmt.patch
-Patch1:         Quit-while-source-file-increased.patch
-Patch6000:      backport-Ensure-that-PollVec-enum-matches-poll-values.patch
-Patch6001:      backport-fix-second-find_cmd-Segmentation-fault.patch
+
+Patch6000:      backport-fix-a-coredump-in-TorrentTracker-fix-513.patch
+Patch6001:      backport-fix-a-null-deref-on-exit.patch
+Patch6002:      backport-Quit-while-source-file-increased.patch
+Patch6003:      backport-Ensure-that-PollVec-enum-matches-poll-values.patch
+Patch6004:      backport-fix-second-find_cmd-Segmentation-fault.patch
 
 %description
 LFTP is a sophisticated file transfer program supporting a number of
@@ -86,6 +89,12 @@ echo "%{_libdir}/lftp/%{version}" > %{buildroot}/etc/ld.so.conf.d/%{name}-%{_arc
 
 
 %changelog
+* Fri Aug 02 2024 chengyechun <chengyechun1@huawei.com> - 4.9.2-5
+- Type:bugfix
+- CVE:NA
+- SUG:NA
+- DESC:sync some patches and rename a patch
+
 * Thu Mar 28 2024 chengyechun <chengyechun1@huawei.com> - 4.9.2-4
 - Type:bugfix
 - CVE:NA