{"action":"Upgrade linux to 6.5.6-1 or later.","affected":[{"fixed":"6.5.6-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["6.5.6-1"],"id":"tcs_01M5NJDDQG7DMP7QE9TNTGJKC3","modified_at":"2026-10-26T18:02:50.114571412Z","published_at":"2023-09-12T20:15:10.573Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2023-4921","https://security-tracker.debian.org/tracker/CVE-2023-4921"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2023-4921#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2023-4921"}],"summary":"A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sendi"}