Vulnerability DatabaseCVE-2022-28805
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CVE-2022-28805
Published:April 08, 2022
Updated:May 17, 2026
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.
Related Resources (13)
https://security.alpinelinux.org/vuln/CVE-2022-28805
https://access.redhat.com/security/cve/CVE-2022-28805
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UHYZOEFDVLVAD6EEP4CDW6DNONIVVHPA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHYZOEFDVLVAD6EEP4CDW6DNONIVVHPA/
https://github.com/lua/lua/commit/1f3c6f4534c6411313361697d98d1145a1f030fa
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJNJ66IFDUKWJJZXHGOLRGIA3HWWC36R/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RJNJ66IFDUKWJJZXHGOLRGIA3HWWC36R/
https://security-tracker.debian.org/tracker/CVE-2022-28805
https://lua-users.org/lists/lua-l/2022-02/msg00070.html
https://lua-users.org/lists/lua-l/2022-02/msg00001.html
https://lua-users.org/lists/lua-l/2022-04/msg00009.html
https://security.gentoo.org/glsa/202305-23
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-28805
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CVSS v4
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Out-of-bounds Read
CWE-125
EPSS
Base Score:
0.17