diff --git a/0003-Fix-memory-leak-in-caf_read_header.patch b/0003-Fix-memory-leak-in-caf_read_header.patch
new file mode 100644
index 0000000000000000000000000000000000000000..01b966eda4914b2a4f99d75d83ab4ec028082828
--- /dev/null
+++ b/0003-Fix-memory-leak-in-caf_read_header.patch
@@ -0,0 +1,65 @@
+From 65cf4511928ff0a4b387a15e10ae9f2431596cf7 Mon Sep 17 00:00:00 2001
+From: ctl-ly <liying_1@chinatelecom.cn>
+Date: Thu, 29 Dec 2022 10:53:55 +0800
+Subject: [PATCH] fix1
+
+---
+ docs/index.md        | 2 +-
+ include/sndfile.h.in | 4 ++--
+ src/caf.c            | 5 +++++
+ 3 files changed, 8 insertions(+), 3 deletions(-)
+
+diff --git a/docs/index.md b/docs/index.md
+index 3779fdf..ee6bd07 100644
+--- a/docs/index.md
++++ b/docs/index.md
+@@ -194,7 +194,7 @@ long as you abide by [the license](http://www.gnu.org/copyleft/lesser.html).
+ Check latest version on
+ [GitHub Releases page](https://github.com/libsndfile/libsndfile/releases/).
+ 
+-Binatries and source packages are signed by current releaser David Seifert aka
++Binaries and source packages are signed by current releaser David Seifert aka
+ @SoapGentoo. You can verify signatures with his public GPG key:
+ 
+ ```
+diff --git a/include/sndfile.h.in b/include/sndfile.h.in
+index 917ff4b..970fb26 100644
+--- a/include/sndfile.h.in
++++ b/include/sndfile.h.in
+@@ -173,6 +173,7 @@ enum
+ 
+ 	SFC_SET_RAW_START_OFFSET		= 0x1090,
+ 
++	/* Commands reserved for dithering, which is not implemented. */
+ 	SFC_SET_DITHER_ON_WRITE			= 0x10A0,
+ 	SFC_SET_DITHER_ON_READ			= 0x10A1,
+ 
+@@ -386,8 +387,7 @@ typedef struct
+ 
+ /*
+ ** Enums and typedefs for adding dither on read and write.
+-** See the html documentation for sf_command(), SFC_SET_DITHER_ON_WRITE
+-** and SFC_SET_DITHER_ON_READ.
++** Reserved for future implementation.
+ */
+ 
+ enum
+diff --git a/src/caf.c b/src/caf.c
+index 45b1dba..6b2e579 100644
+--- a/src/caf.c
++++ b/src/caf.c
+@@ -416,6 +416,11 @@ caf_read_header (SF_PRIVATE *psf)
+ 					return SFE_CAF_BAD_PEAK ;
+ 					} ;
+ 
++				if (psf->peak_info)
++				{	psf_log_printf (psf, "*** Found existing peak info, using last one.\n") ;
++					free (psf->peak_info) ;
++					psf->peak_info = NULL ;
++				};
+ 				if ((psf->peak_info = peak_info_calloc (psf->sf.channels)) == NULL)
+ 					return SFE_MALLOC_FAILED ;
+ 
+-- 
+2.27.0
+
diff --git a/libsndfile.spec b/libsndfile.spec
index 1d869da0bda16af801faa06c1fe9105b471b945a..fb29a5dbe6339b058f4bb7bbf89e15d40e6f9c43 100644
--- a/libsndfile.spec
+++ b/libsndfile.spec
@@ -1,6 +1,6 @@
 Name: libsndfile
 Version: 1.0.31
-Release: 2
+Release: 3
 Summary: Library for reading and writing sound files
 License: LGPLv2+ and GPLv2+ and BSD
 URL: http://libsndfile.github.io/libsndfile
@@ -12,6 +12,7 @@ BuildRequires: sqlite-devel
 
 Patch1:		0001-CVE-2021-3246.patch
 Patch2:		0002-CVE-2021-4156.patch
+Patch3:		0003-Fix-memory-leak-in-caf_read_header.patch
 
 %description
 Libsndfile is a C library for reading and writing files containing
@@ -116,6 +117,11 @@ LD_LIBRARY_PATH=$PWD/src/.libs make check
 %{_mandir}/man1/sndfile-salvage.1*
 
 %changelog
+* Thu Dec 29 2022 liying <liying_1@chinatelecom.cn> - 1.0.31-3
+- Marked unimplemented dither enums in the header file as such.
+- Fix typo
+- Fix memory leak in caf_read_header
+
 * Mon May 16 2022 zhouwenpei <zhouwenpei1@h-partners.com> - 1.0.31-2
 - fix CVE-2021-4156