{"action":"Upgrade xorg-server to 2:21.1.22-1 or later.","affected":[{"fixed":"2:21.1.22-1","introduced":"0"}],"component":"xorg-server","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2:21.1.22-1"],"id":"tcs_01M5NRRR9GR705YR02CQ1A7DVN","modified_at":"2026-10-27T10:00:59.714279885Z","published_at":"2026-04-23T16:16:24.777Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-34001","https://security-tracker.debian.org/tracker/CVE-2026-34001"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-34001#Debian:14/xorg-server","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-34001"}],"summary":"A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to"}