DEBIAN-CVE-2026-75758
Uncontrolled Recursion vulnerability in the Elixir standard library allows an attacker who controls a list passed to inspect/1, List.to_string/1, or List.to_charlist/1 to exhaust a BEAM node's memory. Inspect.List's charlist branch in lib/elixir/lib/inspect.ex classifies a list as a charlist using List.ascii_printable?/2, which examines only the first :printable_limit (4096 by default) elements, and then calls IO.chardata_to_string/1 on the whole term. A list whose printable prefix exceeds that limit but which contains a later element that is not a code point (an atom, an out-of-range integer, or an improper tail) is therefore mis-classified, and the conversion raises ArgumentError. That conversion runs inside List.to_string/1, whose rescue clause builds its message by interpolating inspect(list), which re-enters the same branch and raises again. The nested inspection is an argument to raise, so the recursion is not in tail position and every level is retained: the process stack grows monotonically while each cycle re-walks the list, until the process is killed by max_heap_size or, by default, the node runs out of memory. List.to_charlist/1 has the same rescue shape. Below the printable limit the inner inspect/1 sees the invalid element within its counter and renders the list in ordinary bracket form, so a single ArgumentError is raised and no recursion occurs. This issue affects elixir: from 1.15.0-rc.0 before 1.18.5, from 1.19.0-rc.0 before 1.19.6, and from 1.20.0-rc.0 befo
DEBIAN-CVE-2026-75758
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-75758
elixir-lang
Source reference: /affected/0/package/name
- Affected versions
- 1.18.3.dfsg-1
Source reference:
/affected/0/versions1.18.3.dfsg-2Source reference:
/affected/0/versions1.19.5.dfsg-1Source reference:
/affected/0/versions1.19.5.dfsg-2Source reference:
/affected/0/versions1.20.0.dfsg-1Source reference:
/affected/0/versions1.20.1.dfsg-1Source reference:
/affected/0/versions1.20.1.dfsg-2Source reference:
/affected/0/versions1.20.4+dfsg-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
elixir-lang
Source reference: /affected/1/package/name
- Affected versions
- 1.18.3.dfsg-1
Source reference:
/affected/1/versions1.18.3.dfsg-2Source reference:
/affected/1/versions1.19.5.dfsg-1Source reference:
/affected/1/versions1.19.5.dfsg-2Source reference:
/affected/1/versions1.20.0.dfsg-1Source reference:
/affected/1/versions1.20.1.dfsg-1Source reference:
/affected/1/versions1.20.1.dfsg-2Source reference:
/affected/1/versions - Fixed versions
- 1.20.4+dfsg-1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "elixir-lang",
"purl": "pkg:deb/debian/elixir-lang?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.18.3.dfsg-1",
"1.18.3.dfsg-2",
"1.19.5.dfsg-1",
"1.19.5.dfsg-2",
"1.20.0.dfsg-1",
"1.20.1.dfsg-1",
"1.20.1.dfsg-2",
"1.20.4+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75758.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.20.4+dfsg-1"
}
]
}
],
"package": {
"name": "elixir-lang",
"purl": "pkg:deb/debian/elixir-lang?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.18.3.dfsg-1",
"1.18.3.dfsg-2",
"1.19.5.dfsg-1",
"1.19.5.dfsg-2",
"1.20.0.dfsg-1",
"1.20.1.dfsg-1",
"1.20.1.dfsg-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75758.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58465 · Revision 1
- Added to Heist Feed
- Publisher date