CVE-2021-44647

MEDIUM
Published Jan 11, 20224y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jan 11, 2022 4y ago
Last Modified Jun 17, 2026 2w ago

Description

Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-843

Affected Products 2

VendorProductVersionRange
lualua5.4.3any
fedoraprojectfedora34any

References 5

  • lua-users.org http://lua-users.org/lists/lua-l/2021-11/msg00195.html
    ExploitMailing ListVendor Advisory
  • lua-users.org http://lua-users.org/lists/lua-l/2021-11/msg00204.html
    Mailing ListPatchVendor Advisory
  • access.redhat.com https://access.redhat.com/security/cve/cve-2021-44647
    Third Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P3EMGAQ5Y6GXJLY4K5DUOOEQT4MZ4J4F/
  • security.gentoo.org https://security.gentoo.org/glsa/202305-23

Remediation

  • lua-users.org http://lua-users.org/lists/lua-l/2021-11/msg00204.html
    Mailing ListPatchVendor Advisory