{"action":"Upgrade linux to 5.15.15-1 or later.","affected":[{"fixed":"5.15.15-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["5.15.15-1"],"id":"tcs_01M5NG88GFH9QXFD90FR91XRB1","modified_at":"2026-10-23T18:03:51.555421912Z","published_at":"2024-05-24T15:15:20.237Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-47555","https://security-tracker.debian.org/tracker/CVE-2021-47555"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-47555#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-47555"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: net: vlan: fix underflow for the real_dev refcnt Inject error before dev_hold(real_dev) in register_vlan_dev(), and execute the foll"}