Fixes use-after-free in xmlEncodeEntitiesInternal() in entities.c CVE: CVE-2021-3516 Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539]
Signed-off-by: Tony Tascioglu <[email protected]> --- .../libxml/libxml2/CVE-2021-3516.patch | 36 +++++++++++++++++++ meta/recipes-core/libxml/libxml2_2.9.10.bb | 1 + 2 files changed, 37 insertions(+) create mode 100644 meta/recipes-core/libxml/libxml2/CVE-2021-3516.patch diff --git a/meta/recipes-core/libxml/libxml2/CVE-2021-3516.patch b/meta/recipes-core/libxml/libxml2/CVE-2021-3516.patch new file mode 100644 index 0000000000..287a171924 --- /dev/null +++ b/meta/recipes-core/libxml/libxml2/CVE-2021-3516.patch @@ -0,0 +1,36 @@ +From b76718876953e11bbd73dc6c9457323fd5aeda2e Mon Sep 17 00:00:00 2001 +From: Nick Wellnhofer <[email protected]> +Date: Wed, 21 Apr 2021 13:23:27 +0200 +Subject: [PATCH 2/3] Fix use-after-free with `xmllint --html --push` + +Call htmlCtxtUseOptions to make sure that names aren't stored in +dictionaries. + +Note that this issue only affects xmllint using the HTML push parser. + +Fixes #230. + +CVE: CVE-2021-3516 +Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539] + +Signed-off-by: Tony Tascioglu <[email protected]> +--- + xmllint.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/xmllint.c b/xmllint.c +index c0712674..ba66676b 100644 +--- a/xmllint.c ++++ b/xmllint.c +@@ -2204,7 +2204,7 @@ static void parseAndPrintFile(char *filename, xmlParserCtxtPtr rectxt) { + if (res > 0) { + ctxt = htmlCreatePushParserCtxt(NULL, NULL, + chars, res, filename, XML_CHAR_ENCODING_NONE); +- xmlCtxtUseOptions(ctxt, options); ++ htmlCtxtUseOptions(ctxt, options); + while ((res = fread(chars, 1, pushsize, f)) > 0) { + htmlParseChunk(ctxt, chars, res, 0); + } +-- +2.25.1 + diff --git a/meta/recipes-core/libxml/libxml2_2.9.10.bb b/meta/recipes-core/libxml/libxml2_2.9.10.bb index ad612379b3..6f1229c2d0 100644 --- a/meta/recipes-core/libxml/libxml2_2.9.10.bb +++ b/meta/recipes-core/libxml/libxml2_2.9.10.bb @@ -25,6 +25,7 @@ SRC_URI = "http://www.xmlsoft.org/sources/libxml2-${PV}.tar.gz;name=libtar \ file://CVE-2020-24977.patch \ file://fix-python39.patch \ file://CVE-2021-3517.patch \ + file://CVE-2021-3516.patch \ " SRC_URI[libtar.md5sum] = "10942a1dc23137a8aa07f0639cbfece5" -- 2.29.2
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