{"action":"Upgrade qemu to 1:5.2+dfsg-4 or later.","affected":[{"fixed":"1:5.2+dfsg-4","introduced":"0"}],"component":"qemu","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:5.2+dfsg-4"],"id":"tcs_01M5NFANE8BBZ7R2Y3KCWXREFD","modified_at":"2026-10-23T18:03:24.191798357Z","published_at":"2021-05-13T16:15:07.653Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-20181","https://security-tracker.debian.org/tracker/CVE-2021-20181"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-20181#Debian:14/qemu","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-20181"}],"summary":"A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating thei"}