From: Tim Kientzle <kientzle@acm.org>
Date: Tue, 10 Dec 2024 05:09:29 +0000 (-0800)
Subject: Handle truncation in the middle of a GNU long linkname (#2422)
X-Git-Tag: v3.8.0~109
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=82912103214506316bd9990d73f33d743d55f570;p=thirdparty%2Flibarchive.git

Handle truncation in the middle of a GNU long linkname (#2422)

Thanks to gbdngb12 김동건 for reporting this.

Resolves Issue #2415
---

diff --git a/libarchive/archive_read_support_format_tar.c b/libarchive/archive_read_support_format_tar.c
index 4aaf1b90c..b1344ae57 100644
--- a/libarchive/archive_read_support_format_tar.c
+++ b/libarchive/archive_read_support_format_tar.c
@@ -1146,7 +1146,9 @@ header_gnu_longlink(struct archive_read *a, struct tar *tar,
 	struct archive_string linkpath;
 	archive_string_init(&linkpath);
 	err = read_body_to_string(a, tar, &linkpath, h, unconsumed);
-	archive_entry_set_link(entry, linkpath.s);
+	if (err == ARCHIVE_OK) {
+		archive_entry_set_link(entry, linkpath.s);
+	}
 	archive_string_free(&linkpath);
 	return (err);
 }