# CVE-2021-43519: lua: The lua packages provide support for Lua, a powerful light-weight programming language designed for extending applica...

CVE-2021-43519 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2021-43519, released November 9, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-43519
- Priority: High
- CVSS: 7.0 (Moderate)
- EPSS: 0.0123
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 9, 2021

## Description

The lua packages provide support for Lua, a powerful light-weight programming language designed for extending applications. Lua is also frequently used as a general-purpose, stand-alone language.  Security Fix(es):  * lua: use after free allows Sandbox Escape (CVE-2021-44964)  * lua: stack overflow in lua_resume of ldo.c allows a DoS via a crafted script file (CVE-2021-43519)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | lua RHEL 9 | 0:5.4.4-2.el9_1 | [RHSA-2023:0957](https://patchblox.com/security/data/fix/linux/rhsa-2023-0957.md) | Feb 28, 2023 |
| Linux | lua almalinux 9 | 5.4.4-2.el9_1 | [ALSA-2023:0957](https://patchblox.com/security/data/fix/linux/alsa-2023-0957.md) | Feb 28, 2023 |
| Linux | lua ol 9 | 0:5.4.4-2.el9_1 | [ELSA-2023-0957](https://patchblox.com/security/data/fix/linux/elsa-2023-0957.md) | Feb 28, 2023 |
| Linux | lua rocky 9 | 0:5.4.4-2.el9_1 | [RLSA-2023:0957](https://patchblox.com/security/data/fix/linux/rlsa-2023-0957.md) | Apr 6, 2023 |
| Linux | lua-devel RHEL 9 | 0:5.4.4-2.el9_1 | [RHSA-2023:0957](https://patchblox.com/security/data/fix/linux/rhsa-2023-0957.md) | Feb 28, 2023 |
| Linux | lua-devel almalinux 9 | 5.4.4-2.el9_1 | [ALSA-2023:0957](https://patchblox.com/security/data/fix/linux/alsa-2023-0957.md) | Feb 28, 2023 |
| Linux | lua-devel ol 9 | 0:5.4.4-2.el9_1 | [ELSA-2023-0957](https://patchblox.com/security/data/fix/linux/elsa-2023-0957.md) | Feb 28, 2023 |
| Linux | lua-libs RHEL 9 | 0:5.4.4-2.el9_1 | [RHSA-2023:0957](https://patchblox.com/security/data/fix/linux/rhsa-2023-0957.md) | Feb 28, 2023 |
| Linux | lua-libs almalinux 9 | 5.4.4-2.el9_1 | [ALSA-2023:0957](https://patchblox.com/security/data/fix/linux/alsa-2023-0957.md) | Feb 28, 2023 |
| Linux | lua-libs ol 9 | 0:5.4.4-2.el9_1 | [ELSA-2023-0957](https://patchblox.com/security/data/fix/linux/elsa-2023-0957.md) | Feb 28, 2023 |
| Linux | lua5.4 Debian 12.15 (bookworm) | 5.4.4-1 | [DEBIAN-CVE-2021-43519](https://patchblox.com/security/data/fix/linux/debian-cve-2021-43519.md) | Nov 9, 2021 |
| Linux | lua5.4 Debian 13.5 (trixie) | 5.4.4-1 | [DEBIAN-CVE-2021-43519](https://patchblox.com/security/data/fix/linux/debian-cve-2021-43519.md) | Nov 9, 2021 |
| Linux | lua5.4 Debian 14 | 5.4.4-1 | [DEBIAN-CVE-2021-43519](https://patchblox.com/security/data/fix/linux/debian-cve-2021-43519.md) | Nov 9, 2021 |

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