{"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_01M5NHWSGGC99RENR9QGCV9GJR","modified_at":"2026-10-26T18:00:31.617894969Z","published_at":"2023-01-12T19:15:24.810Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2023-23457","https://security-tracker.debian.org/tracker/CVE-2023-23457"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2023-23457#Debian:14/upx-ucl","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2023-23457"}],"summary":"A Segmentation fault was found in UPX in PackLinuxElf64::invert_pt_dynamic() in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of"}