{"id":"CVE-2019-6706","details":"Lua 5.3.5 has a use-after-free in lua_upvaluejoin in lapi.c. For example, a crash outcome might be achieved by an attacker who is able to trigger a debug.upvaluejoin call in which the arguments have certain relationships.","modified":"2026-07-17T21:02:33.761363047Z","published":"2019-01-23T19:29:00.447Z","related":["ALSA-2019:3706","SUSE-SU-2019:0247-1","openSUSE-SU-2019:0175-1"],"database_specific":{"unresolved_ranges":[{"source":"CPE_FIELD","vendor_product":"canonical:ubuntu_linux","cpes":["cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"],"extracted_events":[{"last_affected":"16.04"},{"last_affected":"18.04"},{"last_affected":"18.10"}]}]},"references":[{"type":"WEB","url":"http://lua-users.org/lists/lua-l/2019-01/msg00039.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/cve-2019-6706"},{"type":"FIX","url":"https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e"},{"type":"EVIDENCE","url":"http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.html"},{"type":"EVIDENCE","url":"https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}