{"id":"JLSEC-2026-554","details":"Lua 5.4.0 (fixed in 5.4.1) has a segmentation fault in changedline in ldebug.c (e.g., when called by `luaG_traceexec`) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function.","modified":"2026-07-25T18:24:37.106320568Z","published":"2026-05-26T19:45:06.761Z","upstream":["CVE-2020-15945"],"database_specific":{"license":"CC-BY-4.0","sources":[{"html_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15945","database_specific":{"status":"Modified"},"id":"CVE-2020-15945","imported":"2026-07-17T22:07:38.080Z","modified":"2026-06-17T02:57:28.240Z","published":"2020-07-24T21:15:34.553Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-15945"}]},"references":[{"type":"WEB","url":"http://lua-users.org/lists/lua-l/2020-07/msg00123.html"},{"type":"WEB","url":"https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3"},{"type":"WEB","url":"https://www.lua.org/bugs.html#5.4.0-8"}],"affected":[{"package":{"name":"Lua_jll","ecosystem":"Julia","purl":"pkg:julia/Lua_jll?uuid=a4086b1d-a96a-5d6b-8e4f-2030e6f25ba6"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.4.3+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-554.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V2","score":"AV:L/AC:L/Au:N/C:N/I:N/A:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}