new file mode 100644
@@ -0,0 +1,31 @@
+From 8eb3afb37f80d7231a998e3074e6fc5f7bdfe4d5 Mon Sep 17 00:00:00 2001
+From: Helmut Grohne <helmut@subdivi.de>
+Date: Sun, 16 Mar 2025 20:28:15 +0100
+Subject: [PATCH] hcom: validate dictsize
+
+Source: https://salsa.debian.org/lts-team/packages/sox/-/blob/debian/14.4.2+git20190427-1+deb10u3/debian/patches/CVE-2021-23159.patch
+
+CVE: CVE-2021-23159
+CVE: CVE-2021-23172
+Upstream-Status: Inactive-Upstream [lastrelease: 2015]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ src/hcom.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/hcom.c b/src/hcom.c
+index 594c8706..9e8b03c6 100644
+--- a/src/hcom.c
++++ b/src/hcom.c
+@@ -141,6 +141,11 @@ static int startread(sox_format_t * ft)
+ return (SOX_EOF);
+ }
+ lsx_readw(ft, &dictsize);
++ if (dictsize == 0 || dictsize > 511)
++ {
++ lsx_fail_errno(ft, SOX_EHDR, "Implausible dictionary size in HCOM header");
++ return SOX_EOF;
++ }
+
+ /* Translate to sox parameters */
+ ft->encoding.encoding = SOX_ENCODING_HCOM;
@@ -30,6 +30,7 @@ LIC_FILES_CHKSUM = "file://LICENSE.GPL;md5=751419260aa954499f7abaabaa882bbe \
SRC_URI = "git://git.code.sf.net/p/sox/code;protocol=https;branch=master \
file://0001-remove-the-error-line-and-live-without-file-type-det.patch \
file://CVE-2021-3643_CVE-2021-23210.patch \
+ file://CVE-2021-23159_CVE-2021-2317.patch \
"
# last release was in 2015, use latest hash from 2024-05-30