{"action":"Upgrade xen to 4.4.0-1 or later.","affected":[{"fixed":"4.4.0-1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.4.0-1"],"id":"tcs_01M5NAQ0DJC84ATM9NAEXGSFPP","modified_at":"2026-10-23T15:47:32.478493907Z","published_at":"2014-01-26T16:58:11.650Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2014-1666","https://security-tracker.debian.org/tracker/CVE-2014-1666"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2014-1666#Debian:14/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2014-1666"}],"summary":"The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which al"}