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No exploitation reportedFix available

CVE-2020-24369

No exploitation reported by the sources we read.

  • Published2020-08-17
  • WeaknessCWE-476

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

ldebug.c in Lua 5.4.0 attempts to access debug information via the line hook of a stripped function, leading to a NULL pointer dereference.

Timeline

dates in UTC
  1. 2020-08-1717:15CVE publishedNVD

Versions per branch

NVD · OSV
Lua
BranchAffectedFixed in
5.4= 5.4.0no fix published
lua
BranchAffectedFixed in
5.4≥ 5.4.0, < 5.4.15.4.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • lua5.4Debian:14all versions · fixed in 5.4.1-1
  • lua5.4Debian:13all versions · fixed in 5.4.1-1
  • lua5.4Debian:12all versions · fixed in 5.4.1-1
  • lua55openSUSE:Tumbleweedall versions · fixed in 5.5.0~beta1-1.1

Vendor advisories

  • CVE-2020-24369 Red Hat Product Security

    lua: NULL pointer dereference when trying to access debug information via the line hook of a stripped function

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2020-08-17
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8g95-2365-4r5r

Frequently asked questions

What is CVE-2020-24369?

ldebug.c in Lua 5.4.0 attempts to access debug information via the line hook of a stripped function, leading to a NULL pointer dereference.

Is CVE-2020-24369 actively exploited?

Active exploitation of CVE-2020-24369 has not been confirmed. Its EPSS score was 1.7% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-24369?

CVE-2020-24369 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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