CVE catalog
CVE-2021-43519
lua5.1: CVE-2021-43519
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.23% · Oct 25, 2026
Stack overflow in lua_resume of ldo.c in Lua Interpreter 5.1.0~5.4.4 allows attackers to perform a Denial of Service via a crafted script file.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | lua5.1 | sid | 5.1.5-12 | not affected |
| Debian | lua5.1 | forky | 5.1.5-12 | not affected |
| Debian | lua5.1 | trixie | 5.1.5-11 | not affected |
| Debian | lua5.1 | bookworm | 5.1.5-9 | not affected |
| Debian | lua5.2 | sid | 5.2.4-4 | not affected |
| Debian | lua5.2 | forky | 5.2.4-4 | not affected |
| Debian | lua5.2 | trixie | 5.2.4-3 | not affected |
| Debian | lua5.2 | bookworm | 5.2.4-3 | not affected |
| Debian | lua5.3 | sid | 5.3.6-4 | not affected |
| Debian | lua5.3 | forky | 5.3.6-4 | not affected |
| Debian | lua5.3 | trixie | 5.3.6-2 | not affected |
| Debian | lua5.3 | bookworm | 5.3.6-2 | not affected |
| Debian | lua5.4 | sid | 5.4.9-1 | fixed |
| Debian | lua5.4 | forky | 5.4.9-1 | fixed |
| Debian | lua5.4 | trixie | 5.4.7-1 | fixed |
| Debian | lua5.4 | bookworm | 5.4.4-3+deb12u1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | lua5.1 | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.1 | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.1 | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.1 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.2 | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.2 | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.2 | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.2 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.3 | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.3 | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.3 | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.3 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Debian | lua5.4 | source | sid | 5.4.4-1 | not yet assigned | Not reported | [1000228] |
| Debian | lua5.4 | source | forky | 5.4.4-1 | not yet assigned | Not reported | [1000228] |
| Debian | lua5.4 | source | trixie | 5.4.4-1 | not yet assigned | Not reported | [1000228] |
| Debian | lua5.4 | source | bookworm | 5.4.4-1 | not yet assigned | Not reported | [1000228] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [liblua5.1-0]Not affected
Source package: [lua5.1]
Details (2)
5.1.5-9· amd64 · bookwormNot affected
dsa · lua5.1 · debian · bookworm
5.1.5-9· arm64 · bookwormNot affected
dsa · lua5.1 · debian · bookworm
- [liblua5.1-0-dbg]Not affected
Source package: [lua5.1]
Details (2)
5.1.5-9· amd64 · bookwormNot affected
dsa · lua5.1 · debian · bookworm
5.1.5-9· arm64 · bookwormNot affected
dsa · lua5.1 · debian · bookworm
- [liblua5.1-0-dev]Not affected
Source package: [lua5.1]
Details (2)
5.1.5-9· amd64 · bookwormNot affected
dsa · lua5.1 · debian · bookworm
5.1.5-9· arm64 · bookwormNot affected
dsa · lua5.1 · debian · bookworm
- [liblua5.2-0]Not affected
Source package: [lua5.2]
Details (2)
5.2.4-3· amd64 · bookwormNot affected
dsa · lua5.2 · debian · bookworm
5.2.4-3· arm64 · bookwormNot affected
dsa · lua5.2 · debian · bookworm
- [liblua5.2-dev]Not affected
Source package: [lua5.2]
Details (2)
5.2.4-3· amd64 · bookwormNot affected
dsa · lua5.2 · debian · bookworm
5.2.4-3· arm64 · bookwormNot affected
dsa · lua5.2 · debian · bookworm
- [liblua5.3-0]Not affected
Source package: [lua5.3]
Details (2)
5.3.6-2· amd64 · bookwormNot affected
dsa · lua5.3 · debian · bookworm
5.3.6-2· arm64 · bookwormNot affected
dsa · lua5.3 · debian · bookworm
- [liblua5.3-0-dbg]Not affected
Source package: [lua5.3]
Details (2)
5.3.6-2· amd64 · bookwormNot affected
dsa · lua5.3 · debian · bookworm
5.3.6-2· arm64 · bookwormNot affected
dsa · lua5.3 · debian · bookworm
- [liblua5.3-dev]Not affected
Source package: [lua5.3]
Details (2)
5.3.6-2· amd64 · bookwormNot affected
dsa · lua5.3 · debian · bookworm
5.3.6-2· arm64 · bookwormNot affected
dsa · lua5.3 · debian · bookworm
- [liblua5.4-0]Fixed
Source package: [lua5.4]
Details (2)
5.4.4-3+deb12u1· amd64 · bookwormFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · bookworm; dsa · lua5.4 · debian · 12
5.4.4-3+deb12u1· arm64 · bookwormFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · bookworm; dsa · lua5.4 · debian · 12
- [liblua5.4-0-dbg]Fixed
Source package: [lua5.4]
Details (2)
5.4.4-3+deb12u1· amd64 · bookwormFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · bookworm; dsa · lua5.4 · debian · 12
5.4.4-3+deb12u1· arm64 · bookwormFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · bookworm; dsa · lua5.4 · debian · 12
- [liblua5.4-dev]Fixed
Source package: [lua5.4]
Details (2)
5.4.4-3+deb12u1· amd64 · bookwormFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · bookworm; dsa · lua5.4 · debian · 12
5.4.4-3+deb12u1· arm64 · bookwormFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · bookworm; dsa · lua5.4 · debian · 12
- [lua5.1]Not affected
Details (2)
5.1.5-9· amd64 · bookwormNot affected
dsa · lua5.1 · debian · bookworm
5.1.5-9· arm64 · bookwormNot affected
dsa · lua5.1 · debian · bookworm
- [lua5.1-doc]Not affected
Source package: [lua5.1]
Details (2)
5.1.5-9· all · bookwormNot affected
dsa · lua5.1 · debian · bookworm
5.1.5-9· all · bookwormNot affected
dsa · lua5.1 · debian · bookworm
- [lua5.2]Not affected
Details (2)
5.2.4-3· amd64 · bookwormNot affected
dsa · lua5.2 · debian · bookworm
5.2.4-3· arm64 · bookwormNot affected
dsa · lua5.2 · debian · bookworm
- [lua5.2-doc]Not affected
Source package: [lua5.2]
Details (2)
5.2.4-3· all · bookwormNot affected
dsa · lua5.2 · debian · bookworm
5.2.4-3· all · bookwormNot affected
dsa · lua5.2 · debian · bookworm
- [lua5.3]Not affected
Details (2)
5.3.6-2· amd64 · bookwormNot affected
dsa · lua5.3 · debian · bookworm
5.3.6-2· arm64 · bookwormNot affected
dsa · lua5.3 · debian · bookworm
- [lua5.4]Fixed
Details (2)
5.4.4-3+deb12u1· amd64 · bookwormFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · bookworm; dsa · lua5.4 · debian · 12
5.4.4-3+deb12u1· arm64 · bookwormFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · bookworm; dsa · lua5.4 · debian · 12
[Debian 13 (Trixie)]
- [liblua5.4-0]Fixed
Source package: [lua5.4]
Details (2)
5.4.7-1+b2· amd64 · trixieFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · 13
5.4.7-1+b2· arm64 · trixieFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · 13
- [liblua5.4-dev]Fixed
Source package: [lua5.4]
Details (2)
5.4.7-1+b2· amd64 · trixieFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · 13
5.4.7-1+b2· arm64 · trixieFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · 13
- [lua5.4]Fixed
Source package: [lua5.4]
Details (2)
5.4.7-1+b2· amd64 · trixieFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · 13
5.4.7-1+b2· arm64 · trixieFixed · Fixed:
5.4.4-1dsa · lua5.4 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_12156-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-43519]
- [https://security-tracker.debian.org/tracker/CVE-2021-43519]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-43519.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-0522.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]