Skip to main content
No exploitation reportedFix available

CVE-2022-28805

No exploitation reported by the sources we read.

  • Published2022-04-08
  • Fixed in5.4.5
  • WeaknessCWE-125

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

singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.

Timeline

dates in UTC
  1. 2022-04-0806:15CVE publishedNVD

Versions per branch

NVD · OSV
Lua
BranchAffectedFixed in
5.4≥ 5.4.0, < 5.4.55.4.5
Fedoraproject fedora
BranchAffectedFixed in
35.x= 35no fix published
36.x= 36no fix published

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

  • luaRed Hat:enterprise_linux:9::crball versions · fixed in 0:5.4.4-3.el9and 4 other packages
  • luaRed Hat:enterprise_linux:9::baseosall versions · fixed in 0:5.4.4-3.el9and 4 other packages
  • luaRed Hat:enterprise_linux:9::appstreamall versions · fixed in 0:5.4.4-3.el9and 3 other packages
  • luaopenEuler:22.03-LTSall versions · fixed in 5.4.3-6.oe2203
  • luaAzure Linux:2all versions · fixed in 5.4.3-2
  • luaAlmaLinux:9all versions · fixed in 5.4.4-3.el9and 2 other packages
  • lua5.4Wolfiall versions · fixed in 0
  • lua5.4Ubuntu:Pro:22.04:LTSall versions · fixed in 5.4.4-1ubuntu0.1~esm1

17 more package ranges on OSV.dev

Vendor advisories

  • CVE-2022-28805 Red Hat Product Security58 products fixed

    lua: heap buffer overread

  • RHSA-2023:2582 Red Hat Product Security58 products fixed

    Red Hat Security Advisory: lua security update

Full record on NVD

Fix

  1. Update Lua to 5.4.5
  2. Vendor fix Red Hat Product Security RHSA-2023:2582 · 58 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

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:H/I:N/A:H
Published
2022-04-08
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-pxhp-rhgc-5jx8

Frequently asked questions

What is CVE-2022-28805?

singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.

Is CVE-2022-28805 actively exploited?

Active exploitation of CVE-2022-28805 has not been confirmed. Its EPSS score was 3.0% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-28805?

CVE-2022-28805 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Running lua? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record