Directory traversal vulnerability in the virStorageBackendFileSystemVolCreate function in storage/storage_backend_fs.c in libvirt, when fine-grained Access Control Lists (ACL) are in effect, allows local users with storage_vol:create ACL but not domain:write permission to write to arbitrary files via a … (dot dot) in a volume name.
libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=034e47c338b13a95cf02106a3af912c1c5f818d7
lists.fedoraproject.org/pipermail/package-announce/2015-December/174404.html
rhn.redhat.com/errata/RHSA-2016-2577.html
security.libvirt.org/2015/0004.html
www.securityfocus.com/bid/90913
security.gentoo.org/glsa/201612-10
www.redhat.com/archives/libvir-list/2015-December/msg00473.html