package/shapelib: fix CVE-2022-0699

A double-free condition exists in contrib/shpsort.c of shapelib 1.5.0
and older releases. This issue may allow an attacker to cause a denial
of service or have other unspecified impact via control over malloc.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/shapelib/0001-Remove-double-free-in-contrib-shpsrt.patch

@@ -0,0 +1,26 @@
+From c75b9281a5b9452d92e1682bdfe6019a13ed819f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Albin=20Eldst=C3=A5l-Ahrens?= <laeder.keps@gmail.com>
+Date: Mon, 3 Jan 2022 12:34:41 +0100
+Subject: [PATCH] Remove double free() in contrib/shpsrt, issue #39
+
+This fixes issue #39
+
+[Retrieved from:
+https://github.com/OSGeo/shapelib/commit/c75b9281a5b9452d92e1682bdfe6019a13ed819f]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ contrib/shpsort.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/contrib/shpsort.c b/contrib/shpsort.c
+index e21e9e0..920cd8c 100644
+--- a/contrib/shpsort.c
++++ b/contrib/shpsort.c
+@@ -113,7 +113,6 @@ static char ** split(const char *arg, const char *delim) {
+ 	free(result[--i]);
+       }
+       free(result);
+-      free(copy);
+       return NULL;
+     }
+     result = tmp;

package/shapelib/shapelib.mk

@@ -11,4 +11,7 @@ SHAPELIB_LICENSE_FILES = web/license.html COPYING
 SHAPELIB_CPE_ID_VENDOR = osgeo
 SHAPELIB_INSTALL_STAGING = YES
 
+# 0001-Remove-double-free-in-contrib-shpsrt.patch
+SHAPELIB_IGNORE_CVES += CVE-2022-0699
+
 $(eval $(autotools-package))