DEBIAN-CVE-2026-41579
runc is a CLI tool for spawning and running containers according to the OCI specification. In versions prior to 1.3.6, 1.4.0-rc.1, 1.4.0-rc.12, 1.5.0-rc.1, and 1.5.0-rc.1, when setting up the container rootfs, setupPtmx and setupDevSymlinks call os.Remove and os.Symlink with a filepath.Join string which allow an image with /dev as a symlink to trick runc into deleting files called ptmx on the host or creating a hardcoded set of symlinks with specific names and targets in an arbitrary pre-existing host directory. This issue is not exploitable under Docker, because Docker creates a top-level read-only layer that masks any malicious /dev symlink present in the container image — unlike some other Linux container tooling, whose higher-level runtimes built on runc remain exposed to exploitation via a malicious image. This issue has been fixed in versions 1.3.6, 1.4.3 and 1.5.0.
DEBIAN-CVE-2026-41579
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-2026-41579
runc
Source reference: /affected/0/package/name
- Affected versions
- 1.1.10+ds1-1
Source reference:
/affected/0/versions1.1.12+ds1-1Source reference:
/affected/0/versions1.1.12+ds1-2Source reference:
/affected/0/versions1.1.12+ds1-3Source reference:
/affected/0/versions1.1.12+ds1-4Source reference:
/affected/0/versions1.1.12+ds1-5Source reference:
/affected/0/versions1.1.12+ds1-5.1Source reference:
/affected/0/versions1.1.15+ds1-1Source reference:
/affected/0/versions1.1.15+ds1-2Source reference:
/affected/0/versions1.1.5+ds1-1Source reference:
/affected/0/versions1.1.5+ds1-1+deb12u1Source reference:
/affected/0/versions1.1.5+ds1-2Source reference:
/affected/0/versions1.1.5+ds1-3Source reference:
/affected/0/versions1.1.5+ds1-4Source reference:
/affected/0/versions1.1.5+ds1-5Source reference:
/affected/0/versions1.3.0+ds1-1Source reference:
/affected/0/versions1.3.0+ds1-2Source reference:
/affected/0/versions1.3.0+ds1-3Source reference:
/affected/0/versions1.3.0+ds1-4Source reference:
/affected/0/versions1.3.2+ds1-1Source reference:
/affected/0/versions1.3.3+ds1-1Source reference:
/affected/0/versions1.3.3+ds1-2Source reference:
/affected/0/versions1.3.3+ds1-3Source reference:
/affected/0/versions1.3.5+ds1-1Source reference:
/affected/0/versions1.3.6+ds1-1Source reference:
/affected/0/versions1.4.3+ds1-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
runc
Source reference: /affected/1/package/name
- Affected versions
- 1.1.15+ds1-2
Source reference:
/affected/1/versions1.3.0+ds1-1Source reference:
/affected/1/versions1.3.0+ds1-2Source reference:
/affected/1/versions1.3.0+ds1-3Source reference:
/affected/1/versions1.3.0+ds1-4Source reference:
/affected/1/versions1.3.2+ds1-1Source reference:
/affected/1/versions1.3.3+ds1-1Source reference:
/affected/1/versions1.3.3+ds1-2Source reference:
/affected/1/versions1.3.3+ds1-3Source reference:
/affected/1/versions1.3.5+ds1-1Source reference:
/affected/1/versions1.3.6+ds1-1Source reference:
/affected/1/versions1.4.3+ds1-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
runc
Source reference: /affected/2/package/name
- Affected versions
- 1.1.15+ds1-2
Source reference:
/affected/2/versions1.3.0+ds1-1Source reference:
/affected/2/versions1.3.0+ds1-2Source reference:
/affected/2/versions1.3.0+ds1-3Source reference:
/affected/2/versions1.3.0+ds1-4Source reference:
/affected/2/versions1.3.2+ds1-1Source reference:
/affected/2/versions1.3.3+ds1-1Source reference:
/affected/2/versions1.3.3+ds1-2Source reference:
/affected/2/versions1.3.3+ds1-3Source reference:
/affected/2/versions1.3.5+ds1-1Source reference:
/affected/2/versions - Fixed versions
- 1.3.6+ds1-1
Source reference:
/affected/2/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": "runc",
"purl": "pkg:deb/debian/runc?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.1.10+ds1-1",
"1.1.12+ds1-1",
"1.1.12+ds1-2",
"1.1.12+ds1-3",
"1.1.12+ds1-4",
"1.1.12+ds1-5",
"1.1.12+ds1-5.1",
"1.1.15+ds1-1",
"1.1.15+ds1-2",
"1.1.5+ds1-1",
"1.1.5+ds1-1+deb12u1",
"1.1.5+ds1-2",
"1.1.5+ds1-3",
"1.1.5+ds1-4",
"1.1.5+ds1-5",
"1.3.0+ds1-1",
"1.3.0+ds1-2",
"1.3.0+ds1-3",
"1.3.0+ds1-4",
"1.3.2+ds1-1",
"1.3.3+ds1-1",
"1.3.3+ds1-2",
"1.3.3+ds1-3",
"1.3.5+ds1-1",
"1.3.6+ds1-1",
"1.4.3+ds1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41579.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "runc",
"purl": "pkg:deb/debian/runc?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.1.15+ds1-2",
"1.3.0+ds1-1",
"1.3.0+ds1-2",
"1.3.0+ds1-3",
"1.3.0+ds1-4",
"1.3.2+ds1-1",
"1.3.3+ds1-1",
"1.3.3+ds1-2",
"1.3.3+ds1-3",
"1.3.5+ds1-1",
"1.3.6+ds1-1",
"1.4.3+ds1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41579.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.6+ds1-1"
}
]
}
],
"package": {
"name": "runc",
"purl": "pkg:deb/debian/runc?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.1.15+ds1-2",
"1.3.0+ds1-1",
"1.3.0+ds1-2",
"1.3.0+ds1-3",
"1.3.0+ds1-4",
"1.3.2+ds1-1",
"1.3.3+ds1-1",
"1.3.3+ds1-2",
"1.3.3+ds1-3",
"1.3.5+ds1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41579.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57672 · Revision 1
- Added to Heist Feed
- Publisher date