CVE-2021-44647
Published: 11 January 2022
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.
Notes
| Author | Note |
|---|---|
| sbeattie | possibly introduced by 7af27ef59da4051914d93d8b63efac663b64765a |
| mdeslaur | issue is specific to Lua 5.4 only and fixed in 5.4.4. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
lua5.1 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| focal |
Not vulnerable
(code not present)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(code not present)
|
|
| kinetic |
Not vulnerable
(code not present)
|
|
| lunar |
Not vulnerable
(code not present)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Not vulnerable
(code not present)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
lua5.2 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4 only)
|
| focal |
Not vulnerable
(5.4 only)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(5.4 only)
|
|
| kinetic |
Not vulnerable
(5.4 only)
|
|
| lunar |
Not vulnerable
(5.4 only)
|
|
| trusty |
Not vulnerable
(5.4 only)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(5.4 only)
|
|
|
lua5.3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4 only)
|
| focal |
Not vulnerable
(5.4 only)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(5.4 only)
|
|
| kinetic |
Not vulnerable
(5.4 only)
|
|
| lunar |
Not vulnerable
(5.4 only)
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(5.4 only)
|
|
|
lua5.4 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(5.4.4-1)
|
|
| kinetic |
Not vulnerable
(5.4.4-3)
|
|
| lunar |
Not vulnerable
(5.4.4-3)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4.4)
|
|
| xenial |
Does not exist
|
|
|
lua50 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4 only)
|
| focal |
Not vulnerable
(5.4 only)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(5.4 only)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |