augeas:avoid NULL pointer dereference in function re_case_expand

Signed-off-by: chengguipeng <chengguipeng1@huawei.com>

augeas.spec

@@ -1,6 +1,6 @@
 Name:               augeas
 Version:            1.12.0
-Release:            4
+Release:            5
 Summary:            Augeas is a configuration editing tool for changing configuration files
 License:            LGPLv2+
 URL:                https://augeas.net/
@@ -11,6 +11,8 @@ Provides:           bundled(gnulib)
 Provides:           augeas-libs = %{version}-%{release} augeas-libs%{?_isa} = %{version}-%{release}
 Obsoletes:          augeas-libs < %{version}-%{release}
 
+Patch0001: 	    avoid-NULL-pointer-dereference-in-function-re_case_expand.patch
+
 %description
 Augeas is a configuration editing tool. It parses configuration files in their native
 formats and transforms them into a tree. Configuration changes are made by manipulating
@@ -78,6 +80,12 @@ make check
 %doc %{_mandir}/man1/au*.1.gz
 
 %changelog
+* Tue Sep 8 2020 chengguipeng<chengguipeng1@huawei.com> - 1.12.0-5
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:avoid NULL pointer dereference in function re_case_expand
+
 * Wed Dec 25 2019 openEuler Buildteam <buildteam@openeuler.org> - 1.12.0-4
 - Type:bugfix
 - ID:NA

avoid-NULL-pointer-dereference-in-function-re_case_expand.patch

@@ -0,0 +1,26 @@
+From c13c26f415405e3203d91f601409497f8aa930dd Mon Sep 17 00:00:00 2001
+From: chengguipeng <chengguipeng1@huawei.com>
+Date: Thu, 3 Sep 2020 16:54:34 +0800
+Subject: [PATCH] 2
+Avoid NULL pointer dereference in function re_case_expand. 
+Because parse_regexp() will return NULL pointer when the input parameter is abnomal.
+---
+ src/fa.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/fa.c b/src/fa.c
+index 8e1d7d4..7935041 100644
+--- a/src/fa.c
++++ b/src/fa.c
+@@ -4447,7 +4447,7 @@ int fa_expand_nocase(const char *regexp, size_t regexp_len,
+     parse.rend = regexp + regexp_len;
+     parse.error = REG_NOERROR;
+     re = parse_regexp(&parse);
+-    if (parse.error != REG_NOERROR)
++    if (re == NULL)
+         return parse.error;
+ 
+     r = re_case_expand(re);
+-- 
+1.8.3.1
+