diff --git a/backport-CVE-2021-42374.patch b/backport-CVE-2021-42374.patch
new file mode 100644
index 0000000000000000000000000000000000000000..8f28a3608440c4f05f42e4e75932839ca2c72ed5
--- /dev/null
+++ b/backport-CVE-2021-42374.patch
@@ -0,0 +1,59 @@
+From 78bd0d8e6153da378ddc9016b42e0fe1bf89a853 Mon Sep 17 00:00:00 2001
+From: jikui <jikui2@huawei.com>
+Date: Mon, 22 Nov 2021 10:46:40 +0800
+Subject: [PATCH] busybox: fix CVE-2021-42374
+
+backport from upstream:
+https://git.busybox.net/busybox/patch/?h=1_34_stable&id=04f052c56ded5ab6a904e3a264a73dc0412b2e78
+
+Signed-off-by: jikui <jikui2@huawei.com>
+---
+ archival/libarchive/decompress_unlzma.c |  5 ++++-
+ testsuite/unlzma.tests                  | 10 ++++++----
+ 2 files changed, 10 insertions(+), 5 deletions(-)
+
+diff --git a/archival/libarchive/decompress_unlzma.c b/archival/libarchive/decompress_unlzma.c
+index 668b016..57a5c4a 100644
+--- a/archival/libarchive/decompress_unlzma.c
++++ b/archival/libarchive/decompress_unlzma.c
+@@ -290,8 +290,11 @@ unpack_lzma_stream(transformer_state_t *xstate)
+ 				uint32_t pos;
+ 
+ 				pos = buffer_pos - rep0;
+-				if ((int32_t)pos < 0)
++				if ((int32_t)pos < 0) {
+ 					pos += header.dict_size;
++					if ((int32_t)pos < 0)
++						goto bad;
++				}
+ 				match_byte = buffer[pos];
+ 				do {
+ 					int bit;
+diff --git a/testsuite/unlzma.tests b/testsuite/unlzma.tests
+index 0e98afe..8c120b1 100755
+--- a/testsuite/unlzma.tests
++++ b/testsuite/unlzma.tests
+@@ -8,14 +8,16 @@
+ 
+ # Damaged encrypted streams
+ testing "unlzma (bad archive 1)" \
+-	"unlzma <unlzma_issue_1.lzma >/dev/null; echo \$?" \
+-"1
++	"unlzma <unlzma_issue_1.lzma 2>&1 >/dev/null; echo \$?" \
++"unlzma: corrupted data
++1
+ " "" ""
+ 
+ # Damaged encrypted streams
+ testing "unlzma (bad archive 2)" \
+-	"unlzma <unlzma_issue_2.lzma >/dev/null; echo \$?" \
+-"1
++	"unlzma <unlzma_issue_2.lzma 2>&1 >/dev/null; echo \$?" \
++"unlzma: corrupted data
++1
+ " "" ""
+ 
+ exit $FAILCOUNT
+-- 
+2.25.1
+
diff --git a/backport-CVE-2021-42377.patch b/backport-CVE-2021-42377.patch
new file mode 100644
index 0000000000000000000000000000000000000000..2a511332566e4d68fa50f09fa7b6f10e562a3549
--- /dev/null
+++ b/backport-CVE-2021-42377.patch
@@ -0,0 +1,42 @@
+From 977939c73d94cc6752192e6956e0cced3e0f2989 Mon Sep 17 00:00:00 2001
+From: jikui <jikui2@huawei.com>
+Date: Mon, 22 Nov 2021 16:36:26 +0800
+Subject: [PATCH] busybox: fix CVE-2021-42377
+
+backport from upstream:
+https://git.busybox.net/busybox/commit/?h=1_34_stable&id=83a4967e50422867f340328d404994553e56b839
+
+Signed-off-by: jikui <jikui2@huawei.com>
+---
+ shell/hush.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/shell/hush.c b/shell/hush.c
+index 8d9ab24..08358c1 100644
+--- a/shell/hush.c
++++ b/shell/hush.c
+@@ -3637,9 +3637,10 @@ static void debug_print_tree(struct pipe *pi, int lvl)
+ 
+ 	pin = 0;
+ 	while (pi) {
+-		fdprintf(2, "%*spipe %d %sres_word=%s followup=%d %s\n",
++		fdprintf(2, "%*spipe %d #cmds:%d %sres_word=%s followup=%d %s\n",
+ 				lvl*2, "",
+ 				pin,
++				pi->num_cmds,
+ 				(IF_HAS_KEYWORDS(pi->pi_inverted ? "! " :) ""),
+ 				RES[pi->res_word],
+ 				pi->followup, PIPE[pi->followup]
+@@ -3782,6 +3783,9 @@ static void done_pipe(struct parse_context *ctx, pipe_style type)
+ #endif
+ 		/* Replace all pipes in ctx with one newly created */
+ 		ctx->list_head = ctx->pipe = pi;
++		/* for case like "cmd && &", do not be tricked by last command
++		 * being null - the entire {...} & is NOT null! */
++		not_null = 1;
+ 	} else {
+  no_conv:
+ 		ctx->pipe->followup = type;
+-- 
+2.25.1
+
diff --git a/busybox.spec b/busybox.spec
index 8995a9100c341592d7e9b1bfed0e21cb614ca072..6d2e668743375710855c63bf3621229a231dfbb5 100644
--- a/busybox.spec
+++ b/busybox.spec
@@ -4,7 +4,7 @@
 %endif
 
 %if "%{!?RELEASE:1}"
-%define RELEASE 7
+%define RELEASE 8
 %endif
 
 Name: busybox
@@ -21,6 +21,8 @@ Source3: busybox-dynamic.config
 
 Patch6000: backport-CVE-2018-1000500.patch
 Patch6001: backport-CVE-2021-28831.patch
+Patch6002: backport-CVE-2021-42374.patch
+Patch6003: backport-CVE-2021-42377.patch
 
 BuildRoot:      %_topdir/BUILDROOT
 #Dependency
@@ -96,6 +98,12 @@ install -m 644 docs/busybox.dynamic.1 $RPM_BUILD_ROOT/%{_mandir}/man1/busybox.1
 %{_mandir}/man1/busybox.petitboot.1.gz
 
 %changelog
+* Mon Nov 22 2021 jikui<jikui2@huawei.com> - 1:1.31.1-8
+- Type:CVE
+- Id:NA
+- SUG:NA
+- DESC: fix CVE-2021-42374 and CVE-2021-42377
+
 * Sat Apr 17 2021 leizhongkai<leizhongkai@huawei.com> - 1:1.31.1-7
 - Type:CVE
 - Id:NA