diff --git a/0001-mat4-mat5-fix-int-overflow-in-dataend-calculation.patch b/0001-mat4-mat5-fix-int-overflow-in-dataend-calculation.patch
new file mode 100644
index 0000000000000000000000000000000000000000..665cb42f691d8bd93e7df632a97a99a89946b70c
--- /dev/null
+++ b/0001-mat4-mat5-fix-int-overflow-in-dataend-calculation.patch
@@ -0,0 +1,43 @@
+From 0754562e13d2e63a248a1c82f90b30bc0ffe307c Mon Sep 17 00:00:00 2001
+From: Alex Stewart <alex.stewart@ni.com>
+Date: Tue, 10 Oct 2023 16:10:34 -0400
+Subject: [PATCH] mat4/mat5: fix int overflow in dataend calculation
+
+The clang sanitizer warns of a possible signed integer overflow when
+calculating the `dataend` value in `mat4_read_header()`.
+
+```
+src/mat4.c:323:41: runtime error: signed integer overflow: 205 * -100663296 cannot be represented in type 'int'
+SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior src/mat4.c:323:41 in
+src/mat4.c:323:48: runtime error: signed integer overflow: 838860800 * 4 cannot be represented in type 'int'
+SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior src/mat4.c:323:48 in
+```
+
+Cast the offending `rows` and `cols` ints to `sf_count_t` (the type of
+`dataend` before performing the calculation, to avoid the issue.
+
+CVE: CVE-2022-33065
+Fixes: https://github.com/libsndfile/libsndfile/issues/789
+Fixes: https://github.com/libsndfile/libsndfile/issues/833
+
+Signed-off-by: Alex Stewart <alex.stewart@ni.com>
+---
+ src/mat4.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/mat4.c b/src/mat4.c
+index 0b1b414b..575683ba 100644
+--- a/src/mat4.c
++++ b/src/mat4.c
+@@ -320,7 +320,7 @@ mat4_read_header (SF_PRIVATE *psf)
+ 				psf->filelength - psf->dataoffset, psf->sf.channels * psf->sf.frames * psf->bytewidth) ;
+ 		}
+ 	else if ((psf->filelength - psf->dataoffset) > psf->sf.channels * psf->sf.frames * psf->bytewidth)
+-		psf->dataend = psf->dataoffset + rows * cols * psf->bytewidth ;
++		psf->dataend = psf->dataoffset + (sf_count_t) rows * (sf_count_t) cols * psf->bytewidth ;
+ 
+ 	psf->datalength = psf->filelength - psf->dataoffset - psf->dataend ;
+ 
+-- 
+2.25.1
+
diff --git a/ChangeLog b/ChangeLog
index 62576177c6d10ff1608bf0d73aca5b4e9309016e..32a2cb7af084089a0bdc8b46b714887ff0769199 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2023-12-04  Erik de Castro Lopo  <erikd AT mega-nerd DOT com>
+
+    * src/mat4.c
+    修复了编号为CVE-2022-33065的漏洞，该漏洞位于src/mat4.c，存在符号整数溢出.
+    --lizihhao <2665233825@qq.com> Mon, 04 Dec 2023 20:44:12 +0800
+
 2013-04-05  Erik de Castro Lopo  <erikd AT mega-nerd DOT com>
 
     * Makefile.am
diff --git a/src/mat4.c b/src/mat4.c
index 3c73680e8a788c76e44dd774e4486358d3c543dd..e2f98b7d23c2c95dff2ffe52bd8904815d393e70 100644
--- a/src/mat4.c
+++ b/src/mat4.c
@@ -320,7 +320,7 @@ mat4_read_header (SF_PRIVATE *psf)
 				psf->filelength - psf->dataoffset, psf->sf.channels * psf->sf.frames * psf->bytewidth) ;
 		}
 	else if ((psf->filelength - psf->dataoffset) > psf->sf.channels * psf->sf.frames * psf->bytewidth)
-		psf->dataend = psf->dataoffset + rows * cols * psf->bytewidth ;
+		psf->dataend = psf->dataoffset + (sf_count_t) rows * (sf_count_t) cols * psf->bytewidth ;
 
 	psf->datalength = psf->filelength - psf->dataoffset - psf->dataend ;