From: Archana Polampalli <archana.polampa...@windriver.com> An issue was discovered in libexpat before 2.6.3. nextScaffoldPart in xmlparse.c can have an integer overflow for m_groupSize on 32-bit platforms (where UINT_MAX equals SIZE_MAX).
Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> Signed-off-by: Steve Sakoman <st...@sakoman.com> --- .../expat/expat/CVE-2024-45492.patch | 38 +++++++++++++++++++ meta/recipes-core/expat/expat_2.5.0.bb | 1 + 2 files changed, 39 insertions(+) create mode 100644 meta/recipes-core/expat/expat/CVE-2024-45492.patch diff --git a/meta/recipes-core/expat/expat/CVE-2024-45492.patch b/meta/recipes-core/expat/expat/CVE-2024-45492.patch new file mode 100644 index 0000000000..a569f18067 --- /dev/null +++ b/meta/recipes-core/expat/expat/CVE-2024-45492.patch @@ -0,0 +1,38 @@ +From 9b0615959a4df00b4719c5beae286eb52fd32fe0 Mon Sep 17 00:00:00 2001 +From: Sebastian Pipping <sebast...@pipping.org> +Date: Mon, 19 Aug 2024 22:37:16 +0200 +Subject: [PATCH] lib: Detect integer overflow in function nextScaffoldPart + +Reported by TaiYou + +CVE: CVE-2024-45492 + +Upstream-Status: Backport [https://github.com/libexpat/libexpat/pull/892/commits/9bf0f2c16ee86f64] + +Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> +--- + lib/xmlparse.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/lib/xmlparse.c b/lib/xmlparse.c +index adb27e3..6d7e92f 100644 +--- a/lib/xmlparse.c ++++ b/lib/xmlparse.c +@@ -7465,6 +7465,15 @@ nextScaffoldPart(XML_Parser parser) { + int next; + + if (! dtd->scaffIndex) { ++ /* Detect and prevent integer overflow. ++ * The preprocessor guard addresses the "always false" warning ++ * from -Wtype-limits on platforms where ++ * sizeof(unsigned int) < sizeof(size_t), e.g. on x86_64. */ ++#if UINT_MAX >= SIZE_MAX ++ if (parser->m_groupSize > ((size_t)(-1) / sizeof(int))) { ++ return -1; ++ } ++#endif + dtd->scaffIndex = (int *)MALLOC(parser, parser->m_groupSize * sizeof(int)); + if (! dtd->scaffIndex) + return -1; +-- +2.40.0 diff --git a/meta/recipes-core/expat/expat_2.5.0.bb b/meta/recipes-core/expat/expat_2.5.0.bb index f670f94685..26190383e3 100644 --- a/meta/recipes-core/expat/expat_2.5.0.bb +++ b/meta/recipes-core/expat/expat_2.5.0.bb @@ -27,6 +27,7 @@ SRC_URI = "https://github.com/libexpat/libexpat/releases/download/R_${VERSION_TA file://CVE-2024-45490-0003.patch \ file://CVE-2024-45490-0004.patch \ file://CVE-2024-45491.patch \ + file://CVE-2024-45492.patch \ " UPSTREAM_CHECK_URI = "https://github.com/libexpat/libexpat/releases/"; -- 2.34.1
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