| Name | CVE-2020-15945 |
| Description | Lua through 5.4.0 has a segmentation fault in changedline in ldebug.c (e.g., when called by luaG_traceexec) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| lua5.1 (PTS) | jessie | 5.1.5-7.1 | fixed |
| buster, bullseye, stretch | 5.1.5-8.1 | fixed |
| sid, trixie, bookworm | 5.1.5-9 | fixed |
| lua5.2 (PTS) | jessie | 5.2.3-1.1 | fixed |
| buster, bullseye, stretch | 5.2.4-1.1 | fixed |
| sid, trixie, bookworm | 5.2.4-3 | fixed |
| lua5.3 (PTS) | stretch (security) | 5.3.3-1+deb9u1 | fixed |
| stretch (lts), stretch | 5.3.3-1+deb9u2 | fixed |
| buster (security), buster, buster (lts) | 5.3.3-1.1+deb10u1 | fixed |
| bullseye | 5.3.3-1.1+deb11u1 | fixed |
| sid, trixie, bookworm | 5.3.6-2 | fixed |
| lua5.4 (PTS) | bullseye | 5.4.2-2 | fixed |
| bookworm | 5.4.4-3+deb12u1 | fixed |
| trixie | 5.4.6-3 | fixed |
| sid | 5.4.7-1 | fixed |
| lua50 (PTS) | jessie | 5.0.3-7 | fixed |
| buster, stretch | 5.0.3-8 | fixed |
| 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) | 5.4.1-1 | | | |
| lua50 | source | (unstable) | (not affected) | | | |
Notes
- 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)
https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3 (v5.4.1)
http://lua-users.org/lists/lua-l/2020-07/msg00123.html