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issue in the component luaG_runerror of Lua v5.4.4 and below leads to a heap-buffer overflow when a recursive error 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Write\nIn Lua 5.4.3, an erroneous finalizer called during a tail call leads to a heap-based buffer 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Overflow\nLua 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.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-15945.json","reference_id":"","reference_type":"","scores":[{"value":"5.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-15945.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-15945","reference_id":"","reference_type":"","scores":[{"value":"0.00158","scoring_system":"epss","scoring_elements":"0.36284","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-15945"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1861999","reference_id":"1861999","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1861999"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15945","reference_id":"CVE-2020-15945","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15945"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/115447?format=json","purl":"pkg:deb/debian/lua5.3@0?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@0%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115445?format=json","purl":"pkg:deb/debian/lua5.3@5.3.3-1.1%2Bdeb11u1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.3-1.1%252Bdeb11u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115443?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-2?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115446?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-3?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-3%3Fdistro=trixie"}],"aliases":["CVE-2020-15945"],"risk_score":2.5,"exploitability":"0.5","weighted_severity":"5.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-k38z-6c33-vueb"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/92483?format=json","vulnerability_id":"VCID-kwvv-s1tz-zucm","summary":"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.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-6706.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-6706.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2019-6706","reference_id":"","reference_type":"","scores":[{"value":"0.00904","scoring_system":"epss","scoring_elements":"0.76093","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2019-6706"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1670019","reference_id":"1670019","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1670019"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=920321","reference_id":"920321","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=920321"},{"reference_url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/dos/46246.txt","reference_id":"CVE-2019-6706","reference_type":"exploit","scores":[],"url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/dos/46246.txt"},{"reference_url":"https://access.redhat.com/errata/RHSA-2019:3706","reference_id":"RHSA-2019:3706","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2019:3706"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/115445?format=json","purl":"pkg:deb/debian/lua5.3@5.3.3-1.1%2Bdeb11u1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.3-1.1%252Bdeb11u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115444?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115443?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-2?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115446?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-3?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-3%3Fdistro=trixie"}],"aliases":["CVE-2019-6706"],"risk_score":3.4,"exploitability":"0.5","weighted_severity":"6.8","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-kwvv-s1tz-zucm"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/52897?format=json","vulnerability_id":"VCID-qp4c-jwam-nub9","summary":"Release of Invalid Pointer or Reference\n`lgc.c` mishandles the interaction between barriers and the sweep phase, leading to a memory access violation involving `collectgarbage`.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-24371.json","reference_id":"","reference_type":"","scores":[{"value":"7.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-24371.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-24371","reference_id":"","reference_type":"","scores":[{"value":"0.0046","scoring_system":"epss","scoring_elements":"0.64457","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-24371"},{"reference_url":"https://www.lua.org/bugs.html#5.4.0-9","reference_id":"","reference_type":"","scores":[],"url":"https://www.lua.org/bugs.html#5.4.0-9"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1870294","reference_id":"1870294","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1870294"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=971010","reference_id":"971010","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=971010"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-24371","reference_id":"CVE-2020-24371","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-24371"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/115447?format=json","purl":"pkg:deb/debian/lua5.3@0?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@0%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115445?format=json","purl":"pkg:deb/debian/lua5.3@5.3.3-1.1%2Bdeb11u1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.3-1.1%252Bdeb11u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115443?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-2?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115446?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-3?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-3%3Fdistro=trixie"}],"aliases":["CVE-2020-24371"],"risk_score":3.3,"exploitability":"0.5","weighted_severity":"6.6","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-qp4c-jwam-nub9"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/42039?format=json","vulnerability_id":"VCID-sypb-grma-cfhq","summary":"Access of Resource Using Incompatible Type ('Type Confusion')\nLua are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service.","references":[{"reference_url":"http://lua-users.org/lists/lua-l/2021-11/msg00195.html","reference_id":"","reference_type":"","scores":[],"url":"http://lua-users.org/lists/lua-l/2021-11/msg00195.html"},{"reference_url":"http://lua-users.org/lists/lua-l/2021-11/msg00204.html","reference_id":"","reference_type":"","scores":[],"url":"http://lua-users.org/lists/lua-l/2021-11/msg00204.html"},{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-44647.json","reference_id":"","reference_type":"","scores":[{"value":"5.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-44647.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-44647","reference_id":"","reference_type":"","scores":[{"value":"0.00134","scoring_system":"epss","scoring_elements":"0.32479","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-44647"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1004189","reference_id":"1004189","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1004189"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2044415","reference_id":"2044415","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2044415"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44647","reference_id":"CVE-2021-44647","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44647"},{"reference_url":"https://security.gentoo.org/glsa/202305-23","reference_id":"GLSA-202305-23","reference_type":"","scores":[],"url":"https://security.gentoo.org/glsa/202305-23"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/115447?format=json","purl":"pkg:deb/debian/lua5.3@0?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@0%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115445?format=json","purl":"pkg:deb/debian/lua5.3@5.3.3-1.1%2Bdeb11u1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.3-1.1%252Bdeb11u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115443?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-2?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115446?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-3?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-3%3Fdistro=trixie"}],"aliases":["CVE-2021-44647"],"risk_score":2.5,"exploitability":"0.5","weighted_severity":"5.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-sypb-grma-cfhq"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/52894?format=json","vulnerability_id":"VCID-ute6-ecyg-9ffz","summary":"Integer Underflow (Wrap or Wraparound)\n`ldebug.c` allows a negation overflow and segmentation fault in `getlocal` and `setlocal`.","references":[{"reference_url":"http://lua-users.org/lists/lua-l/2020-07/msg00324.html","reference_id":"","reference_type":"","scores":[],"url":"http://lua-users.org/lists/lua-l/2020-07/msg00324.html"},{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-24370.json","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-24370.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-24370","reference_id":"","reference_type":"","scores":[{"value":"0.02019","scoring_system":"epss","scoring_elements":"0.84072","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-24370"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1870290","reference_id":"1870290","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1870290"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=971613","reference_id":"971613","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=971613"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988734","reference_id":"988734","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988734"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-24370","reference_id":"CVE-2020-24370","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-24370"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4510","reference_id":"RHSA-2021:4510","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4510"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/115445?format=json","purl":"pkg:deb/debian/lua5.3@5.3.3-1.1%2Bdeb11u1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.3-1.1%252Bdeb11u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115444?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115443?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-2?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/115446?format=json","purl":"pkg:deb/debian/lua5.3@5.3.6-3?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-3%3Fdistro=trixie"}],"aliases":["CVE-2020-24370"],"risk_score":2.4,"exploitability":"0.5","weighted_severity":"4.8","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-ute6-ecyg-9ffz"}],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lua5.3@5.3.6-2%3Fdistro=trixie"}