{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":[],"id":"tcs_01M5NFHGNK4WFAZQFR9V1GVC3P","modified_at":"2026-09-01T20:04:26.901604094Z","published_at":"2021-06-11T15:15:11.187Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-28689","https://security-tracker.debian.org/tracker/CVE-2021-28689"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-28689#Debian:13/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-28689"}],"summary":"x86: Speculative vulnerabilities with bare (non-shim) 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used"}