{"action":"Upgrade qemu to 1:6.1+dfsg-6 or later.","affected":[{"fixed":"1:6.1+dfsg-6","introduced":"0"}],"component":"qemu","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:6.1+dfsg-6"],"id":"tcs_01M5NFV8485CVAKBV6V0MBM54C","modified_at":"2026-10-23T18:03:49.889083538Z","published_at":"2022-03-23T20:15:09.893Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-3748","https://security-tracker.debian.org/tracker/CVE-2021-3748"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-3748","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-3748"}],"summary":"A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the"}