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Vulnerability record · CVE-2020-24370 · published 17 August 2020

CVE-2020-24370: Lua vulnerability

Lua · Lua

ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlocal and setlocal, as demonstrated by getlocal(3,2^31).

5.3 CVSS 3.1 Medium EPSS 3.8% · top 10.3% CWE-191 · CWE-191
5.3CVSS 3.1 base score, v2 5.0
3.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
12References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlocal and setlocal, as demonstrated by getlocal(3,2^31).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lua-users.org/lists/lua-l/2020-07/msg00324.html ExploitMailing ListVendor Advisory
https://github.com/lua/lua/commit/a585eae6e7ada1ca9271607a4f48dfb17868ab7b PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00019.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E6KONNG6UEI3FMEOY67NDZC Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QXYMCIUNGK26VHAYHGP5LPW Third Party Advisory
http://lua-users.org/lists/lua-l/2020-07/msg00324.html ExploitMailing ListVendor Advisory
https://github.com/lua/lua/commit/a585eae6e7ada1ca9271607a4f48dfb17868ab7b PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00019.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E6KONNG6UEI3FMEOY67NDZC Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QXYMCIUNGK26VHAYHGP5LPW Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-24370), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.