From: Amaury Couderc <[email protected]>

Signed-off-by: Amaury Couderc <[email protected]>
---
 .../gnutls/libtasn1/CVE-2025-13151.patch      | 36 +++++++++++++++++++
 .../recipes-support/gnutls/libtasn1_4.20.0.bb |  1 +
 2 files changed, 37 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..6ece045643
--- /dev/null
+++ b/meta/recipes-support/gnutls/libtasn1/CVE-2025-13151.patch
@@ -0,0 +1,36 @@
+From d6dbdff9a87e277c5c42adca935b32b5f99b464f Mon Sep 17 00:00:00 2001
+From: Vijay Sarvepalli <[email protected]>
+Date: Mon, 12 Jan 2026 10:49:46 +0100
+Subject: [PATCH] CVE-2025-13151
+
+Stack-based buffer overflow in libtasn1 version: v4.20.0. 
+The function fails to validate the size of input data 
+resulting in a buffer overflow in asn1_expend_octet_string.
+
+Fixes CVE-2025-13151
+CVE-2025-13151
+
+Upstream-Status: Backport
+[https://gitlab.com/gnutls/libtasn1/-/merge_requests/121/diffs?commit_id=305377bad9ab87f461a2adcbb056c424cd56d03a]
+
+Signed-off-by: Amaury Couderc <[email protected]>
+---
+ 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;
+-- 
+2.43.0
+
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"
-- 
2.44.1

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