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d="scan'208";a="504465661" Received: from rcdn-l-core-04.cisco.com ([173.37.255.141]) by rcdn-iport-8.cisco.com with ESMTP/TLS/TLS_AES_256_GCM_SHA384; 20 Jul 2026 12:20:12 +0000 Received: from bgl-ads-3413.cisco.com (bgl-ads-3413.cisco.com [173.39.60.50]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "ciscoit-managed-infra-smtp-auth.cisco.com", Issuer "Internal Private TLS SubCA" (verified OK)) by rcdn-l-core-04.cisco.com (Postfix) with ESMTPS id E6C71180005CD for ; Mon, 20 Jul 2026 12:20:11 +0000 (GMT) Received: by bgl-ads-3413.cisco.com (Postfix, from userid 1795984) id 15E14CC037D; Mon, 20 Jul 2026 17:50:10 +0530 (IST) From: "Deepak Rathore -X (deeratho - E INFOCHIPS PRIVATE LIMITED at Cisco)" To: openembedded-core@lists.openembedded.org Subject: [OE-core][wrynose][PATCH v2 04/10] expat: fix CVE-2026-56405 Date: Mon, 20 Jul 2026 17:46:09 +0530 Message-Id: <20260720121615.2520859-5-deeratho@cisco.com> X-Mailer: git-send-email 2.35.6 In-Reply-To: <20260720121615.2520859-1-deeratho@cisco.com> References: <20260710130809.2817559-1-deeratho@cisco.com> <20260720121615.2520859-1-deeratho@cisco.com> MIME-Version: 1.0 X-Outbound-Client-TLS: VERIFIED;bgl-ads-3413.cisco.com [173.39.60.50];TLSv1.3;TLS_AES_256_GCM_SHA384;256;ciscoit-managed-infra-smtp-auth.cisco.com X-Outbound-SMTP-Client: 173.39.60.50, bgl-ads-3413.cisco.com X-Outbound-Node: rcdn-l-core-04.cisco.com 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 ; Mon, 20 Jul 2026 12:20:18 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/241381 From: Deepak Rathore This patch applies the upstream fix shown in [1] as referenced by [2]. [1] https://github.com/libexpat/libexpat/commit/2c6c42d33689f6b266a5267b639e03cde17e53c0 [2] https://nvd.nist.gov/vuln/detail/CVE-2026-56405 Signed-off-by: Deepak Rathore --- - Changes from v1 to v2: Refresh the patch on top of latest wrynose branch merged commits. .../expat/expat/CVE-2026-56405.patch | 32 +++++++++++++++++++ meta/recipes-core/expat/expat_2.7.5.bb | 1 + 2 files changed, 33 insertions(+) create mode 100644 meta/recipes-core/expat/expat/CVE-2026-56405.patch diff --git a/meta/recipes-core/expat/expat/CVE-2026-56405.patch b/meta/recipes-core/expat/expat/CVE-2026-56405.patch new file mode 100644 index 0000000000..c850801c1a --- /dev/null +++ b/meta/recipes-core/expat/expat/CVE-2026-56405.patch @@ -0,0 +1,32 @@ +From 73209f445f0265b203829fa7873caa78ca83cefe Mon Sep 17 00:00:00 2001 +From: netliomax25-code +Date: Fri, 29 May 2026 11:45:17 +0530 +Subject: [PATCH] lib: Protect function getAttributeId from signed integer + overflow + +CVE: CVE-2026-56405 +Upstream-Status: Backport [https://github.com/libexpat/libexpat/commit/2c6c42d33689f6b266a5267b639e03cde17e53c0] + +(cherry picked from commit 2c6c42d33689f6b266a5267b639e03cde17e53c0) +Signed-off-by: Deepak Rathore +--- + expat/lib/xmlparse.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c +index 1b7e289f..ec707336 100644 +--- a/expat/lib/xmlparse.c ++++ b/expat/lib/xmlparse.c +@@ -7324,6 +7324,10 @@ getAttributeId(XML_Parser parser, const ENCODING *enc, const char *start, + } else { + int i; + for (i = 0; name[i]; i++) { ++ /* Detect and prevent signed integer overflow */ ++ if (i == INT_MAX) { ++ return NULL; ++ } + /* attributes without prefix are *not* in the default namespace */ + if (name[i] == XML_T(ASCII_COLON)) { + int j; +-- +2.43.7 diff --git a/meta/recipes-core/expat/expat_2.7.5.bb b/meta/recipes-core/expat/expat_2.7.5.bb index d15e023207..789fd7e077 100644 --- a/meta/recipes-core/expat/expat_2.7.5.bb +++ b/meta/recipes-core/expat/expat_2.7.5.bb @@ -23,6 +23,7 @@ SRC_URI = "${GITHUB_BASE_URI}/download/R_${VERSION_TAG}/expat-${PV}.tar.bz2 \ file://CVE-2026-56403_p2.patch;striplevel=2 \ file://CVE-2026-56408.patch;striplevel=2 \ file://CVE-2026-56404.patch;striplevel=2 \ + file://CVE-2026-56405.patch;striplevel=2 \ " GITHUB_BASE_URI = "https://github.com/libexpat/libexpat/releases/"