CVE-2020-24370
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).
02 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).
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.83% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 89.6% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-08-17 00:00Z6 YR AGO
- Last updated
- 2024-08-04 15:12Z2 YR AGO
- Reserved
- 2020-08-17
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- f2fff11ef1e2c4ddb4840229bc2e5c93ad34a0d325449f93e837bca6e2fb1c1e
05 Affected products
06 References
- lua-users.orghttp://lua-users.org/lists/lua-l/2020-07/msg00324.html
- github.comhttps://github.com/lua/lua/commit/a585eae6e7ada1ca9271607a4f48dfb17868ab7b
- lists.fedoraproject.orgFEDORA-2020-d7ed9f18ffhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QXYMCIUNGK26VHAYHGP5LPW56G2KWOHQ/
- lists.fedoraproject.orgFEDORA-2020-c83556709chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E6KONNG6UEI3FMEOY67NDZC32NBGBI44/
- lists.debian.org[debian-lts-announce] 20200926 [SECURITY] [DLA 2381-1] lua5.3 security updatehttps://lists.debian.org/debian-lts-announce/2020/09/msg00019.html
- lists.debian.org[debian-lts-announce] 20230622 [SECURITY] [DLA 3469-1] lua5.3 security updatehttps://lists.debian.org/debian-lts-announce/2023/06/msg00031.html
07 Fixed in
AlmaLinux 8
- lua Fixed in 5.3.4-12.el8
- lua-devel Fixed in 5.3.4-12.el8
- lua-libs Fixed in 5.3.4-12.el8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- lua Fixed in 5.3.4-12.el8
- lua-devel Fixed in 5.3.4-12.el8
- lua-libs Fixed in 5.3.4-12.el8
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- lua5.3 Fixed in 5.3.6-1
- lua5.4 Fixed in 5.4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- lua5.3 Fixed in 5.3.6-1
- lua5.4 Fixed in 5.4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- lua5.3 Fixed in 5.3.6-1
- lua5.4 Fixed in 5.4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.