textproc/libxml2: ship patches via files/ due to gitlab

- gitlab has a tendency to change checksum of patches due to metadata changes
- switch to including the patches in the tree directly instead of using PATCH_FILES

PR:             251040
Submitted by:   daniel.engberg.lists@pyret.net
Reported by:    David Armstrong <bink19th@pm.me>

1 files changed, 33 insertions, 0 deletions

diff --git a/textproc/libxml2/files/patch-CVE-2019-20388 b/textproc/libxml2/files/patch-CVE-2019-20388
new file mode 100644
index 000000000000..a049f2c6f019
--- /dev/null
+++ b/textproc/libxml2/files/patch-CVE-2019-20388
@@ -0,0 +1,33 @@
+From 7ffcd44d7e6c46704f8af0321d9314cd26e0e18a Mon Sep 17 00:00:00 2001
+From: Zhipeng Xie <xiezhipeng1@huawei.com>
+Date: Tue, 20 Aug 2019 16:33:06 +0800
+Subject: [PATCH] Fix memory leak in xmlSchemaValidateStream
+
+When ctxt->schema is NULL, xmlSchemaSAXPlug->xmlSchemaPreRun
+alloc a new schema for ctxt->schema and set vctxt->xsiAssemble
+to 1. Then xmlSchemaVStart->xmlSchemaPreRun initialize
+vctxt->xsiAssemble to 0 again which cause the alloced schema
+can not be freed anymore.
+
+Found with libFuzzer.
+
+Signed-off-by: Zhipeng Xie <xiezhipeng1@huawei.com>
+---
+ xmlschemas.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/xmlschemas.c b/xmlschemas.c
+index 301c8449..39d92182 100644
+--- xmlschemas.c
++++ xmlschemas.c
+@@ -28090,7 +28090,6 @@ xmlSchemaPreRun(xmlSchemaValidCtxtPtr vctxt) {
+     vctxt->nberrors = 0;
+     vctxt->depth = -1;
+     vctxt->skipDepth = -1;
+-    vctxt->xsiAssemble = 0;
+     vctxt->hasKeyrefs = 0;
+ #ifdef ENABLE_IDC_NODE_TABLES_TEST
+     vctxt->createIDCNodeTables = 1;
+-- 
+GitLab
+