From patchwork Wed Mar 25 07:24:53 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vijay Anusuri X-Patchwork-Id: 84322 X-Patchwork-Delegate: yoann.congal@smile.fr Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFE42FEA82C for ; Wed, 25 Mar 2026 07:25:12 +0000 (UTC) Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) by mx.groups.io with SMTP id smtpd.msgproc02-g2.17219.1774423511448695657 for ; Wed, 25 Mar 2026 00:25:11 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=@mvista.com header.s=google header.b=RgiCErtD; spf=pass (domain: mvista.com, ip: 209.85.214.177, mailfrom: vanusuri@mvista.com) Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-2ab077e3f32so22018855ad.3 for ; Wed, 25 Mar 2026 00:25:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mvista.com; s=google; t=1774423510; x=1775028310; darn=lists.openembedded.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=J7nOpVhqBzDDkTGHSl8uI/UySUItk4U9Bc/Xtm5ovsU=; b=RgiCErtD/xgvvhVeRLsPxktQtF8sWq7DQ3UOVoI9+rcoUsDQQVxWAb2KnEawarPFAm 74KS7vrP8+6VY2xtv3MPRey6v0TzzgjjwIFxre2Jk83nh1pdEfZANQ5lEhJIq+JOI6vR nmWhQDhp4H6y/qZxRQ35DwiOgwbd0+ipwhRk4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774423510; x=1775028310; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=J7nOpVhqBzDDkTGHSl8uI/UySUItk4U9Bc/Xtm5ovsU=; b=kcy5Y99Ttd7jV8SlgBkKyXjOuEqaA4M8gNsjU2NBcJdIfmLP91GSIB5QnNdue/9KPG TN78Pijh7RQUcaVxv2iIz5YmHbuSnggy+tjcDxV/HsyDwgnBhn4jpfL+GcEFVJlTo3hJ Hq8htuK1fCxbHn86+diVuj9F3/CF4IkXgO8RVRSobVOq2YFuNWQJ2tIqMKl1ZST4hxu3 K5mBp32D6yC7/dEAwqUL6WikQA+YRYAgzKasbXmx2qvqqm4/oAlgqcBFMi0JNl4ywjEL Gkivube4XTPqcwh6PlVabkbOc4eeIFs/XjGhUlmLHtlHU/N9sovugYCZ31Xh6YQbeLj6 fb4g== X-Gm-Message-State: AOJu0YwdC3ZSUucAiyvDacYlb4nNRw4YpSQJsteA0kdCIJeP7DKRgtsW oTPIlfMlAWUY+uVvvJ7SKVxNDKrnR+FEb46zqy2TpvxGMdBmGlkJbP8R05hCmayICA7+x1wRJMj Hgm0YMp1ylA== X-Gm-Gg: ATEYQzwzHKIxYs7nJh1dBkZ/4acygHK6KvGEdUxabGsqXFPgdNXQUCxQWye3ilLCuAd w7CR8cblbpChWKZPL8WZzfXHssoZ5ncnF1EyeURTZ7XflmAbdZqQ7wf4SGzJjzaV7O0ul3k0MIr KvPdtClrHVUyYb27dbmfM4V5R88BqWgtV/5d91v0ilKkeEMy0EJiQPArKAvw7jYgZUaOrgz/aXv NMARWPxMPJ18VKxVi4O4A0f/g0UG6YId5JJHtxjjvHsGSvTEFKPV2ltR2BHNJdPHzG0ImxomuTN GgjjF2pE/KcqW4iuyjc1NkV6CgStzsL+2/k1a616Z/PgEy+MdWBqDqeKrvf83F3gYj3infHu/Kp 5zpm2zku3yEIXDwteop7KDOAHW0hnHkmeELc60diBwtXSZb55MOmr5xrZYpfuDGMS8n2smAgWa7 pmMb6Lx9QvrZEbJkV2m0L9XyI4syMlzyHdtO9q X-Received: by 2002:a17:902:ef07:b0:2ae:ba5f:3ac3 with SMTP id d9443c01a7336-2b0b09a7468mr28032495ad.2.1774423510347; Wed, 25 Mar 2026 00:25:10 -0700 (PDT) Received: from localhost.localdomain ([2406:7400:54:2bec:794a:a8bb:bd94:ee98]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b0836955dbsm232803035ad.72.2026.03.25.00.25.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Mar 2026 00:25:09 -0700 (PDT) From: vanusuri@mvista.com To: openembedded-core@lists.openembedded.org Cc: Vijay Anusuri Subject: [OE-core][kirkstone][PATCH 1/2] python3-pyopenssl: Fix CVE-2026-27448 Date: Wed, 25 Mar 2026 12:54:53 +0530 Message-Id: <20260325072454.91845-1-vanusuri@mvista.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Wed, 25 Mar 2026 07:25:12 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/233861 From: Vijay Anusuri Pick patch mentioned in NVD [1] https://nvd.nist.gov/vuln/detail/CVE-2026-27448 [2] https://ubuntu.com/security/CVE-2026-27448 Signed-off-by: Vijay Anusuri --- .../python3-pyopenssl/CVE-2026-27448.patch | 125 ++++++++++++++++++ .../python/python3-pyopenssl_22.0.0.bb | 4 + 2 files changed, 129 insertions(+) create mode 100644 meta/recipes-devtools/python/python3-pyopenssl/CVE-2026-27448.patch diff --git a/meta/recipes-devtools/python/python3-pyopenssl/CVE-2026-27448.patch b/meta/recipes-devtools/python/python3-pyopenssl/CVE-2026-27448.patch new file mode 100644 index 0000000000..4a06e2c020 --- /dev/null +++ b/meta/recipes-devtools/python/python3-pyopenssl/CVE-2026-27448.patch @@ -0,0 +1,125 @@ +From d41a814759a9fb49584ca8ab3f7295de49a85aa0 Mon Sep 17 00:00:00 2001 +From: Alex Gaynor +Date: Mon, 16 Feb 2026 21:04:37 -0500 +Subject: [PATCH] Handle exceptions in set_tlsext_servername_callback callbacks + (#1478) + +When the servername callback raises an exception, call sys.excepthook +with the exception info and return SSL_TLSEXT_ERR_ALERT_FATAL to abort +the handshake. Previously, exceptions would propagate uncaught through +the CFFI callback boundary. + +https://claude.ai/code/session_01P7y1XmWkdtC5UcmZwGDvGi + +Co-authored-by: Claude + +Upstream-Status: Backport [https://github.com/pyca/pyopenssl/commit/d41a814759a9fb49584ca8ab3f7295de49a85aa0] +CVE: CVE-2026-27448 +Signed-off-by: Vijay Anusuri +--- + CHANGELOG.rst | 2 ++ + src/OpenSSL/SSL.py | 7 ++++++- + tests/test_ssl.py | 50 ++++++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 58 insertions(+), 1 deletion(-) + +diff --git a/CHANGELOG.rst b/CHANGELOG.rst +index c84b30a..5b6d523 100644 +--- a/CHANGELOG.rst ++++ b/CHANGELOG.rst +@@ -20,6 +20,8 @@ Deprecations: + Changes: + ^^^^^^^^ + ++- ``Context.set_tlsext_servername_callback`` now handles exceptions raised in the callback by calling ``sys.excepthook`` and returning a fatal TLS alert. Previously, exceptions were silently swallowed and the handshake would proceed as if the callback had succeeded. ++ + - Expose wrappers for some `DTLS + `_ + primitives. `#1026 `_ +diff --git a/src/OpenSSL/SSL.py b/src/OpenSSL/SSL.py +index 12374b7..6ef44d4 100644 +--- a/src/OpenSSL/SSL.py ++++ b/src/OpenSSL/SSL.py +@@ -1,5 +1,6 @@ + import os + import socket ++import sys + from sys import platform + from functools import wraps, partial + from itertools import count, chain +@@ -1431,7 +1432,11 @@ class Context(object): + + @wraps(callback) + def wrapper(ssl, alert, arg): +- callback(Connection._reverse_mapping[ssl]) ++ try: ++ callback(Connection._reverse_mapping[ssl]) ++ except Exception: ++ sys.excepthook(*sys.exc_info()) ++ return _lib.SSL_TLSEXT_ERR_ALERT_FATAL + return 0 + + self._tlsext_servername_callback = _ffi.callback( +diff --git a/tests/test_ssl.py b/tests/test_ssl.py +index ccc8a38..77e1876 100644 +--- a/tests/test_ssl.py ++++ b/tests/test_ssl.py +@@ -1884,6 +1884,56 @@ class TestServerNameCallback(object): + + assert args == [(server, b"foo1.example.com")] + ++ def test_servername_callback_exception( ++ self, monkeypatch: pytest.MonkeyPatch ++ ) -> None: ++ """ ++ When the callback passed to `Context.set_tlsext_servername_callback` ++ raises an exception, ``sys.excepthook`` is called with the exception ++ and the handshake fails with an ``Error``. ++ """ ++ exc = TypeError("server name callback failed") ++ ++ def servername(conn: Connection) -> None: ++ raise exc ++ ++ excepthook_calls: list[ ++ tuple[type[BaseException], BaseException, object] ++ ] = [] ++ ++ def custom_excepthook( ++ exc_type: type[BaseException], ++ exc_value: BaseException, ++ exc_tb: object, ++ ) -> None: ++ excepthook_calls.append((exc_type, exc_value, exc_tb)) ++ ++ context = Context(SSLv23_METHOD) ++ context.set_tlsext_servername_callback(servername) ++ ++ # Necessary to actually accept the connection ++ context.use_privatekey(load_privatekey(FILETYPE_PEM, server_key_pem)) ++ context.use_certificate( ++ load_certificate(FILETYPE_PEM, server_cert_pem) ++ ) ++ ++ # Do a little connection to trigger the logic ++ server = Connection(context, None) ++ server.set_accept_state() ++ ++ client = Connection(Context(SSLv23_METHOD), None) ++ client.set_connect_state() ++ client.set_tlsext_host_name(b"foo1.example.com") ++ ++ monkeypatch.setattr(sys, "excepthook", custom_excepthook) ++ with pytest.raises(Error): ++ interact_in_memory(server, client) ++ ++ assert len(excepthook_calls) == 1 ++ assert excepthook_calls[0][0] is TypeError ++ assert excepthook_calls[0][1] is exc ++ assert excepthook_calls[0][2] is not None ++ + + class TestApplicationLayerProtoNegotiation(object): + """ +-- +2.25.1 + diff --git a/meta/recipes-devtools/python/python3-pyopenssl_22.0.0.bb b/meta/recipes-devtools/python/python3-pyopenssl_22.0.0.bb index db0e809ef5..13d87939b6 100644 --- a/meta/recipes-devtools/python/python3-pyopenssl_22.0.0.bb +++ b/meta/recipes-devtools/python/python3-pyopenssl_22.0.0.bb @@ -10,6 +10,10 @@ SRC_URI[sha256sum] = "660b1b1425aac4a1bea1d94168a85d99f0b3144c869dd4390d27629d00 PYPI_PACKAGE = "pyOpenSSL" inherit pypi setuptools3 +SRC_URI += " \ + file://CVE-2026-27448.patch \ +" + PACKAGES =+ "${PN}-tests" FILES:${PN}-tests = "${libdir}/${PYTHON_DIR}/site-packages/OpenSSL/test"