{"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_01M5NG1DV8XX38ZSNH2DR9BVC0","modified_at":"2026-10-23T18:04:16.058168893Z","published_at":"2023-03-24T20:15:08.317Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-43313","https://security-tracker.debian.org/tracker/CVE-2021-43313"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-43313#Debian:14/upx-ucl","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-43313"}],"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 PackLinuxElf32::invert_pt_dynamic at p_"}