From 308c5dd2c9fe2d9f12c5cd644c06f7b4b38c22e8 Mon Sep 17 00:00:00 2001
From: Hugo SIMELIERE <hsimeliere.opensource@witekio.com>
Date: Fri, 23 Jan 2026 08:35:28 +0100
Subject: [PATCH] libtasn1: Fix CVE-2025-13151

Upstream-Status: Backport from https://gitlab.com/gnutls/libtasn1/-/commit/d276cc495a2a32b182c3c39851f1ba58f2d9f9b8

(From OE-Core rev: 3f9f51783597a682efdf989bebac2934b1f7040c)

Signed-off-by: Bruno VERNAY <bruno.vernay@se.com>
Signed-off-by: Hugo SIMELIERE <hsimeliere.opensource@witekio.com>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 .../gnutls/libtasn1/CVE-2025-13151.patch      | 30 +++++++++++++++++++
 .../recipes-support/gnutls/libtasn1_4.20.0.bb |  1 +
 2 files changed, 31 insertions(+)
 create mode 100644 meta/recipes-support/gnutls/libtasn1/CVE-2025-13151.patch

diff --git a/meta/recipes-support/gnutls/libtasn1/CVE-2025-13151.patch b/meta/recipes-support/gnutls/libtasn1/CVE-2025-13151.patch
new file mode 100644
index 0000000000..5047d67984
--- /dev/null
+++ b/meta/recipes-support/gnutls/libtasn1/CVE-2025-13151.patch
@@ -0,0 +1,30 @@
+From ff7aa7ef2b9ba41df8f2d1e71b05bf2c2ad868dd Mon Sep 17 00:00:00 2001
+From: Vijay Sarvepalli <vssarvepalli@cert.org>
+Date: Mon, 22 Dec 2025 12:24:27 -0500
+Subject: [PATCH] Fix for CVE-2025-13151 Buffer overflow
+
+Upstream-Status: Backport [https://gitlab.com/gnutls/libtasn1/-/commit/d276cc495a2a32b182c3c39851f1ba58f2d9f9b8]
+CVE: CVE-2025-13151
+
+Signed-off-by: Simon Josefsson <simon@josefsson.org>
+Signed-off-by: Hugo SIMELIERE <hsimeliere.opensource@witekio.com>
+---
+ lib/decoding.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/decoding.c b/lib/decoding.c
+index 1e0fcb3..abcb49f 100644
+--- a/lib/decoding.c
++++ b/lib/decoding.c
+@@ -1983,7 +1983,7 @@ int
+ asn1_expand_octet_string (asn1_node_const definitions, asn1_node *element,
+ 			  const char *octetName, const char *objectName)
+ {
+-  char name[2 * ASN1_MAX_NAME_SIZE + 1], value[ASN1_MAX_NAME_SIZE];
++  char name[2 * ASN1_MAX_NAME_SIZE + 2], value[ASN1_MAX_NAME_SIZE];
+   int retCode = ASN1_SUCCESS, result;
+   int len, len2, len3;
+   asn1_node_const p2;
+-- 
+2.47.1
+
diff --git a/meta/recipes-support/gnutls/libtasn1_4.20.0.bb b/meta/recipes-support/gnutls/libtasn1_4.20.0.bb
index 8127ba5b1d..bfc011a2f1 100644
--- a/meta/recipes-support/gnutls/libtasn1_4.20.0.bb
+++ b/meta/recipes-support/gnutls/libtasn1_4.20.0.bb
@@ -11,6 +11,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=1ebbd3e34237af26da5dc08a4e440464 \
 
 SRC_URI = "${GNU_MIRROR}/libtasn1/libtasn1-${PV}.tar.gz \
            file://dont-depend-on-help2man.patch \
+           file://CVE-2025-13151.patch \
            "
 
 DEPENDS = "bison-native"