{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"xwayland","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":[],"id":"tcs_01M5NSPQGWHBTSY6SRM6ERBQFF","modified_at":"2026-10-01T03:03:24.794749077Z","published_at":"2026-06-05T12:16:39.617Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-50261","https://security-tracker.debian.org/tracker/CVE-2026-50261"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-50261#Debian:12/xwayland","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-50261"}],"summary":"A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a"}