CVE-2021-45985
First published: Mon Apr 10 2023(Updated: )
<p>This CVE was assigned by Mitre. Some Microsoft products consume <a href="https://lua.org/about.html">Lau open-source software</a>. The purpose of this document is to attest to the fact that the products listed in the Security Updates table have been updated to protect against this vulnerability.</p>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 11 | =22H2 | |
| Microsoft CBL Mariner 2.0 ARM | ||
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows Server 2025 | ||
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows Server 2025 | ||
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows Server 2022, 23H2 Edition | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 11 | =23H2 | |
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows 11 | =23H2 | |
| Microsoft CBL Mariner 2.0 x64 | ||
| Microsoft Windows 10 | =22H2 | |
| Microsoft Azure Linux 3.0 x64 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Azure Linux 3.0 ARM | ||
| Lua | =5.4.3 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2021-45985?
CVE-2021-45985 is a vulnerability in Lua 5.4.3 that causes an erroneous finalizer to be called during a tail call, leading to a heap-based buffer over-read.
What is the severity of CVE-2021-45985?
The severity of CVE-2021-45985 is high, with a severity value of 7.5.
How does CVE-2021-45985 impact Lua 5.4.3?
CVE-2021-45985 can cause a heap-based buffer over-read in Lua 5.4.3 due to an erroneous finalizer called during a tail call.
How can I fix CVE-2021-45985?
To fix CVE-2021-45985, update Lua to version 5.4.4 or later, which includes a patch for the vulnerability.
Where can I find more information about CVE-2021-45985?
You can find more information about CVE-2021-45985 on the Lua mailing list, Lua GitHub repository, and Lua bug tracker.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/author
- agent/weakness
- agent/first-publish-date
- collector/msrc
- source/Microsoft
- collector/msrc-cve
- agent/severity
- agent/references
- agent/last-modified-date
- agent/software-canonical-lookup
- agent/description
- agent/softwarecombine
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/microsoft
- canonical/microsoft windows 10
- version/microsoft windows 10/21h2
- canonical/microsoft windows 11
- version/microsoft windows 11/22h2
- canonical/microsoft cbl mariner 2.0 arm
- version/microsoft windows 11/24h2
- canonical/microsoft windows server 2025
- version/microsoft windows 10/22h2
- canonical/microsoft windows server 2022, 23h2 edition
- canonical/microsoft windows server 2022
- version/microsoft windows 11/23h2
- canonical/microsoft cbl mariner 2.0 x64
- canonical/microsoft azure linux 3.0 x64
- canonical/microsoft azure linux 3.0 arm
- vendor/lua
- canonical/lua
- version/lua/5.4.3