{"action":"Upgrade linux to 6.4.4-1 or later.","affected":[{"fixed":"6.4.4-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["6.4.4-1"],"id":"tcs_01M5NJN4KQ9G6MQ6AETFS3M0FT","modified_at":"2026-10-26T18:02:38.663337024Z","published_at":"2025-09-15T15:15:46.977Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2023-53205","https://security-tracker.debian.org/tracker/CVE-2023-53205"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2023-53205#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2023-53205"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler We do check for target CPU == -1, but this might change at"}