From: Tim Kientzle <kientzle@acm.org>
Date: Sat, 31 Jan 2015 07:57:03 +0000 (-0800)
Subject: Add a check to archive_read_filter_consume to reject any
X-Git-Tag: v3.1.900a~146
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6c9668f3202215ddb71617b41c19b6f05acf008;p=thirdparty%2Flibarchive.git

Add a check to archive_read_filter_consume to reject any
attempts to move the file pointer by a negative amount.

Note:  Either this or commit 3865cf2 provides a fix for
Issue 394.
---

diff --git a/libarchive/archive_read.c b/libarchive/archive_read.c
index 8f71a8b93..d649e9aae 100644
--- a/libarchive/archive_read.c
+++ b/libarchive/archive_read.c
@@ -1471,6 +1471,8 @@ __archive_read_filter_consume(struct archive_read_filter * filter,
 {
 	int64_t skipped;
 
+	if (request < 0)
+		return ARCHIVE_FATAL;
 	if (request == 0)
 		return 0;