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.
Exploitability
AV:LAC:HPR:LUI:NScope
S:UImpact
C:NI:LA:N2.5/CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N