diff --git a/package/sox/0007-hcom-validate-dictsize.patch b/package/sox/0007-hcom-validate-dictsize.patch
new file mode 100644
index 0000000000..722b64675b
--- /dev/null
+++ b/package/sox/0007-hcom-validate-dictsize.patch
@@ -0,0 +1,38 @@
+From 54455f59305d9ce94cc73100bc2dd542865fed4b Mon Sep 17 00:00:00 2001
+From: Helmut Grohne <helmut@subdivi.de>
+Date: Sat, 17 May 2025 22:33:16 +0200
+Subject: [PATCH] hcom: validate dictsize
+
+Bug: https://sourceforge.net/p/sox/bugs/350/
+Bug: https://sourceforge.net/p/sox/bugs/352/
+Bug-Debian: https://bugs.debian.org/1021133
+Bug-Debian: https://bugs.debian.org/1021134
+
+This patch fixes both CVE-2021-23159 and CVE-2021-23172.
+
+Upstream: https://sourceforge.net/p/sox/bugs/350/
+Upstream: https://sourceforge.net/p/sox/bugs/352/
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.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;
+-- 
+2.49.0
+
diff --git a/package/sox/sox.mk b/package/sox/sox.mk
index eba166f68b..6ce9ed3508 100644
--- a/package/sox/sox.mk
+++ b/package/sox/sox.mk
@@ -64,6 +64,11 @@ SOX_IGNORE_CVES += CVE-2019-13590
 # due to the change of CPE ID to sox_project:sox in the NVD database
 SOX_IGNORE_CVES += CVE-2021-3643 CVE-2021-23210
 
+# 0007-hcom-validate-dictsize.patch
+# This entry is NOT stale, those CVEs are not reported by pkg-stats
+# due to the change of CPE ID to sox_project:sox in the NVD database
+SOX_IGNORE_CVES += CVE-2021-23159 CVE-2021-23172 CVE-2023-34318
+
 SOX_CONF_OPTS = \
 	--with-distro="Buildroot" \
 	--disable-stack-protector