| Name | CVE-2021-44647 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1004189 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| lua5.1 (PTS) | bullseye | 5.1.5-8.1 | fixed |
| sid, trixie, bookworm | 5.1.5-9 | fixed |
| lua5.2 (PTS) | bullseye | 5.2.4-1.1 | fixed |
| sid, trixie, bookworm | 5.2.4-3 | fixed |
| lua5.3 (PTS) | bullseye | 5.3.3-1.1+deb11u1 | fixed |
| sid, trixie, bookworm | 5.3.6-2 | fixed |
| lua5.4 (PTS) | bullseye | 5.4.2-2 | vulnerable |
| bookworm | 5.4.4-3+deb12u1 | fixed |
| sid, trixie | 5.4.6-3 | fixed |
| lua50 (PTS) | bullseye | 5.0.3-8.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| lua5.1 | source | (unstable) | (not affected) | | | |
| lua5.2 | source | (unstable) | (not affected) | | | |
| lua5.3 | source | (unstable) | (not affected) | | | |
| lua5.4 | source | (unstable) | 5.4.4-1 | | | 1004189 |
| lua50 | source | (unstable) | (not affected) | | | |
Notes
[bullseye] - lua5.4 <no-dsa> (Minor issue)
- lua5.3 <not-affected> (Specific to 5.4)
- lua5.2 <not-affected> (Specific to 5.4)
- lua5.1 <not-affected> (Specific to 5.4)
- lua50 <not-affected> (Specific to 5.4)
http://lua-users.org/lists/lua-l/2021-11/msg00195.html
http://lua-users.org/lists/lua-l/2021-11/msg00204.html
Fixed by: https://github.com/lua/lua/commit/1de95e97ef65632a88e08b6184bd9d1ceba7ec2f