libarchive: fix CVE-2017-5601

srcpkgs/libarchive/patches/CVE-2017-5601.patch

@@ -0,0 +1,24 @@
+From 98dcbbf0bf4854bf987557e55e55fff7abbf3ea9 Mon Sep 17 00:00:00 2001
+From: Martin Matuska <martin@matuska.org>
+Date: Thu, 19 Jan 2017 22:00:18 +0100
+Subject: [PATCH] Fail with negative lha->compsize in lha_read_file_header_1()
+ Fixes a heap buffer overflow reported in Secunia SA74169
+
+---
+ libarchive/archive_read_support_format_lha.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git libarchive/archive_read_support_format_lha.c.orig libarchive/archive_read_support_format_lha.c
+index 52a5531..d77a7c2 100644
+--- libarchive/archive_read_support_format_lha.c.orig
++++ libarchive/archive_read_support_format_lha.c
+@@ -924,6 +924,9 @@ lha_read_file_header_1(struct archive_read *a, struct lha *lha)
+ 	/* Get a real compressed file size. */
+ 	lha->compsize -= extdsize - 2;
+ 
++	if (lha->compsize < 0)
++		goto invalid;	/* Invalid compressed file size */
++
+ 	if (sum_calculated != headersum) {
+ 		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+ 		    "LHa header sum error");

srcpkgs/libarchive/template

@@ -1,7 +1,7 @@
 # Template file for 'libarchive'
 pkgname=libarchive
 version=3.2.2
-revision=1
+revision=2
 bootstrap=yes
 build_style=gnu-configure
 configure_args="$(vopt_enable acl) $(vopt_enable acl xattr)