The archive_read_format_cpio_read_header function in archive_read_support_format_cpio.c in libarchive before 3.2.1 allows remote attackers to cause a denial of service (application crash) via a CPIO archive with a large symlink.
https://security.gentoo.org/glsa/201701-03
https://github.com/libarchive/libarchive/issues/705
https://github.com/libarchive/libarchive/commit/fd7e0c02
https://bugzilla.redhat.com/show_bug.cgi?id=1347084
http://www.securityfocus.com/bid/91813
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.debian.org/security/2016/dsa-3657