What’s Vulnerable › Vulnerabilities

CVE-2020-24371

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-08-17 · updated 2026-06-17
• Weakness: CWE-763

Description

lgc.c in Lua 5.4.0 mishandles the interaction between barriers and the sweep phase, leading to a memory access violation involving collectgarbage.

Affected products

• Lua: 5.4.0

References

• https://github.com/lua/lua/commit/a6da1472c0c5e05ff249325f979531ad51533110
• https://www.lua.org/bugs.html#5.4.0-10
• https://github.com/lua/lua/commit/a6da1472c0c5e05ff249325f979531ad51533110
• https://www.lua.org/bugs.html#5.4.0-10

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