{"action":"Upgrade upx-ucl to 4.2.2-1 or later.","affected":[{"fixed":"4.2.2-1","introduced":"0"}],"component":"upx-ucl","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.2.2-1"],"id":"tcs_01M5NG1DPFDRRTZPASJB3PPTP9","modified_at":"2026-10-23T18:03:39.470019454Z","published_at":"2023-03-24T20:15:08.270Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-43312","https://security-tracker.debian.org/tracker/CVE-2021-43312"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-43312#Debian:14/upx-ucl","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-43312"}],"summary":"A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address. The issue is being triggered in the function PackLinuxElf64::invert_pt_dynamic at p_"}