{"action":"Upgrade clickhouse to 18.16.1+ds-7.3 or later.","affected":[{"fixed":"18.16.1+ds-7.3","introduced":"0"}],"component":"clickhouse","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["18.16.1+ds-7.3"],"id":"tcs_01M5NG0XQ1BAKDJ42XD6FTA9R6","modified_at":"2026-10-23T18:04:15.851845496Z","published_at":"2022-03-14T23:15:07.917Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-42387","https://security-tracker.debian.org/tracker/CVE-2021-42387"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-42387","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-42387"}],"summary":"Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query. As part of the LZ4::decompressImpl() loop, a 16-bit unsigned user-supplied value ('offset') is read from t"}