{"id":2225202,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2225202/?format=json","web_url":"http://patchwork.ozlabs.org/project/buildroot/patch/20260420154559.2707314-1-titouan.christophe@mind.be/","project":{"id":27,"url":"http://patchwork.ozlabs.org/api/1.1/projects/27/?format=json","name":"Buildroot development","link_name":"buildroot","list_id":"buildroot.buildroot.org","list_email":"buildroot@buildroot.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260420154559.2707314-1-titouan.christophe@mind.be>","date":"2026-04-20T15:45:59","name":"[for,2025.02.x] package/systemd: add patch for CVE-2026-40226","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"a6cc69908a9668857ff0b4b84beea134ae7eca13","submitter":{"id":90763,"url":"http://patchwork.ozlabs.org/api/1.1/people/90763/?format=json","name":"Titouan Christophe","email":"titouan.christophe@mind.be"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/buildroot/patch/20260420154559.2707314-1-titouan.christophe@mind.be/mbox/","series":[{"id":500623,"url":"http://patchwork.ozlabs.org/api/1.1/series/500623/?format=json","web_url":"http://patchwork.ozlabs.org/project/buildroot/list/?series=500623","date":"2026-04-20T15:45:59","name":"[for,2025.02.x] package/systemd: add patch for CVE-2026-40226","version":1,"mbox":"http://patchwork.ozlabs.org/series/500623/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2225202/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2225202/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":["incoming-buildroot@patchwork.ozlabs.org","buildroot@buildroot.org"],"Delivered-To":["patchwork-incoming-buildroot@legolas.ozlabs.org","buildroot@buildroot.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=buildroot.org header.i=@buildroot.org\n header.a=rsa-sha256 header.s=default header.b=A7jcMw0A;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=buildroot.org\n (client-ip=2605:bc80:3010::136; helo=smtp3.osuosl.org;\n envelope-from=buildroot-bounces@buildroot.org; receiver=patchwork.ozlabs.org)"],"Received":["from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fzqbz1z4wz1yGs\n\tfor ;\n Tue, 21 Apr 2026 01:46:55 +1000 (AEST)","from localhost (localhost [127.0.0.1])\n\tby smtp3.osuosl.org (Postfix) with ESMTP id A00CD610F1;\n\tMon, 20 Apr 2026 15:46:53 +0000 (UTC)","from smtp3.osuosl.org ([127.0.0.1])\n by localhost (smtp3.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP\n id oZdv3Ssf2GiY; Mon, 20 Apr 2026 15:46:52 +0000 (UTC)","from lists1.osuosl.org (lists1.osuosl.org [140.211.166.142])\n\tby smtp3.osuosl.org (Postfix) with ESMTP id 8B22360AA1;\n\tMon, 20 Apr 2026 15:46:52 +0000 (UTC)","from smtp4.osuosl.org (smtp4.osuosl.org [IPv6:2605:bc80:3010::137])\n by lists1.osuosl.org (Postfix) with ESMTP id A2DBD259\n for ; Mon, 20 Apr 2026 15:46:50 +0000 (UTC)","from localhost (localhost [127.0.0.1])\n by smtp4.osuosl.org (Postfix) with ESMTP id 893D8410F2\n for ; Mon, 20 Apr 2026 15:46:50 +0000 (UTC)","from smtp4.osuosl.org ([127.0.0.1])\n by localhost (smtp4.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP\n id 1F95049NMXzF for ;\n Mon, 20 Apr 2026 15:46:49 +0000 (UTC)","from mail-wr1-x431.google.com (mail-wr1-x431.google.com\n [IPv6:2a00:1450:4864:20::431])\n by smtp4.osuosl.org (Postfix) with ESMTPS id 8635E410B2\n for ; Mon, 20 Apr 2026 15:46:48 +0000 (UTC)","by mail-wr1-x431.google.com with SMTP id\n ffacd0b85a97d-43d7a5e77b1so2266142f8f.1\n for ; Mon, 20 Apr 2026 08:46:48 -0700 (PDT)","from dragon (ip-94-140-185-241.reverse.destiny.be. 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charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"buildroot-bounces@buildroot.org","Sender":"\"buildroot\" "},"content":"This backports the fix for the following vulnerability:\n- CVE-2026-40226:\n In nspawn in systemd 233 through 259 before 260, an escape-to-host\n action can occur via a crafted optional config file.\n https://www.cve.org/CVERecord?id=CVE-2026-40226\n\nSigned-off-by: Titouan Christophe \n---\n package/systemd/0001-Fix-CVE-2026-40226.patch | 90 +++++++++++++++++++\n 1 file changed, 90 insertions(+)\n create mode 100644 package/systemd/0001-Fix-CVE-2026-40226.patch","diff":"diff --git a/package/systemd/0001-Fix-CVE-2026-40226.patch b/package/systemd/0001-Fix-CVE-2026-40226.patch\nnew file mode 100644\nindex 0000000000..250b6aff33\n--- /dev/null\n+++ b/package/systemd/0001-Fix-CVE-2026-40226.patch\n@@ -0,0 +1,90 @@\n+From b3131f63747db53ad76a9aab2d21da1ce9d59b9d Mon Sep 17 00:00:00 2001\n+From: Titouan Christophe \n+Date: Mon, 20 Apr 2026 12:04:45 +0200\n+Subject: [PATCH] Fix CVE-2026-40226\n+\n+This is the concatenation of the 2 upstream commits:\n+\n+===============================================================================\n+[1/2] nspawn: apply BindUser/Ephemeral from settings file only if trusted\n+\n+Originally reported on yeswehack.com as:\n+YWH-PGM9780-116\n+\n+Follow-up for 2f8930449079403b26c9164b8eeac78d5af2c8df\n+Follow-up for a2f577fca0be79b23f61f033229b64884e7d840a\n+\n+Upstream: https://github.com/systemd/systemd/commit/61bceb1bff4b1f9c126b18dc971ca3e6d8c71c40\n+===============================================================================\n+[2/2] nspawn: normalize pivot_root paths\n+\n+Originally reported on yeswehack.com as:\n+YWH-PGM9780-116\n+\n+Follow-up for b53ede699cdc5233041a22591f18863fb3fe2672\n+\n+Upstream: https://github.com/systemd/systemd/commit/7b85f5498a958e5bb660c703b8f4a71cceed3373\n+===============================================================================\n+\n+CVE: CVE-2026-34155\n+\n+Signed-off-by: Titouan Christophe \n+---\n+ src/nspawn/nspawn-mount.c | 4 +++-\n+ src/nspawn/nspawn.c | 18 ++++++++++++++----\n+ 2 files changed, 17 insertions(+), 5 deletions(-)\n+\n+diff --git a/src/nspawn/nspawn-mount.c b/src/nspawn/nspawn-mount.c\n+index 874d54e734..cba69cf0a9 100644\n+--- a/src/nspawn/nspawn-mount.c\n++++ b/src/nspawn/nspawn-mount.c\n+@@ -1311,7 +1311,9 @@ int pivot_root_parse(char **pivot_root_new, char **pivot_root_old, const char *s\n+ \n+ if (!path_is_absolute(root_new))\n+ return -EINVAL;\n+- if (root_old && !path_is_absolute(root_old))\n++ if (!path_is_normalized(root_new))\n++ return -EINVAL;\n++ if (root_old && (!path_is_absolute(root_old) || !path_is_normalized(root_old)))\n+ return -EINVAL;\n+ \n+ free_and_replace(*pivot_root_new, root_new);\n+diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c\n+index 459caa7c58..8692c771ba 100644\n+--- a/src/nspawn/nspawn.c\n++++ b/src/nspawn/nspawn.c\n+@@ -4626,8 +4626,13 @@ static int merge_settings(Settings *settings, const char *path) {\n+ }\n+ \n+ if ((arg_settings_mask & SETTING_EPHEMERAL) == 0 &&\n+- settings->ephemeral >= 0)\n+- arg_ephemeral = settings->ephemeral;\n++ settings->ephemeral >= 0) {\n++\n++ if (!arg_settings_trusted)\n++ log_warning(\"Ignoring ephemeral setting, file %s is not trusted.\", path);\n++ else\n++ arg_ephemeral = settings->ephemeral;\n++ }\n+ \n+ if ((arg_settings_mask & SETTING_DIRECTORY) == 0 &&\n+ settings->root) {\n+@@ -4795,8 +4800,13 @@ static int merge_settings(Settings *settings, const char *path) {\n+ }\n+ \n+ if ((arg_settings_mask & SETTING_BIND_USER) == 0 &&\n+- !strv_isempty(settings->bind_user))\n+- strv_free_and_replace(arg_bind_user, settings->bind_user);\n++ !strv_isempty(settings->bind_user)) {\n++\n++ if (!arg_settings_trusted)\n++ log_warning(\"Ignoring bind user setting, file %s is not trusted.\", path);\n++ else\n++ strv_free_and_replace(arg_bind_user, settings->bind_user);\n++ }\n+ \n+ if ((arg_settings_mask & SETTING_NOTIFY_READY) == 0 &&\n+ settings->notify_ready >= 0)\n+-- \n+2.53.0\n+\n","prefixes":["for","2025.02.x"]}