What’s Vulnerable › Vulnerabilities

CVE-2021-44647

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-01-11 · updated 2026-06-17
• Weakness: CWE-843

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.

Affected products

• Fedoraproject Fedora: 34
• Lua: 5.4.3

References

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

Get alerted when CVE-2021-44647 or the next vulnerability affects your stack