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, 32 insertions, 0 deletions

diff --git a/textproc/libxml2/files/patch-CVE-2020-7595 b/textproc/libxml2/files/patch-CVE-2020-7595
new file mode 100644
index 000000000000..5bcd916ade7f
--- /dev/null
+++ b/textproc/libxml2/files/patch-CVE-2020-7595
@@ -0,0 +1,32 @@
+From 0e1a49c8907645d2e155f0d89d4d9895ac5112b5 Mon Sep 17 00:00:00 2001
+From: Zhipeng Xie <xiezhipeng1@huawei.com>
+Date: Thu, 12 Dec 2019 17:30:55 +0800
+Subject: [PATCH] Fix infinite loop in xmlStringLenDecodeEntities
+
+When ctxt->instate == XML_PARSER_EOF,xmlParseStringEntityRef
+return NULL which cause a infinite loop in xmlStringLenDecodeEntities
+
+Found with libFuzzer.
+
+Signed-off-by: Zhipeng Xie <xiezhipeng1@huawei.com>
+---
+ parser.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/parser.c b/parser.c
+index d1c31963..a34bb6cd 100644
+--- parser.c
++++ parser.c
+@@ -2646,7 +2646,8 @@ xmlStringLenDecodeEntities(xmlParserCtxtPtr ctxt, const xmlChar *str, int len,
+     else
+         c = 0;
+     while ((c != 0) && (c != end) && /* non input consuming loop */
+-	   (c != end2) && (c != end3)) {
++           (c != end2) && (c != end3) &&
++           (ctxt->instate != XML_PARSER_EOF)) {
+ 
+ 	if (c == 0) break;
+         if ((c == '&') && (str[1] == '#')) {
+-- 
+GitLab
+