UBUNTU-CVE-2026-41579

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Source

https://ubuntu.com/security/CVE-2026-41579

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-41579

Upstream

CVE-2026-41579

Published

2026-07-01T02:17:00Z

Modified

2026-07-01T23:40:25.131661846Z

Severity

3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

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.

References

Affected packages

Ubuntu:20.04:LTS

runc

Package

Name: runc
Purl: pkg:deb/ubuntu/runc?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.0~rc8+git20190923.3e425f80-0ubuntu1

1.0.0~rc10-0ubuntu1

1.0.0~rc93-0ubuntu1~20.04.1

1.0.0~rc93-0ubuntu1~20.04.2

1.0.0~rc95-0ubuntu1~20.04.1

1.0.0~rc95-0ubuntu1~20.04.2

1.0.1-0ubuntu2~20.04.1

1.1.0-0ubuntu1~20.04.1

1.1.0-0ubuntu1~20.04.2

1.1.4-0ubuntu1~20.04.1

1.1.4-0ubuntu1~20.04.2

1.1.4-0ubuntu1~20.04.3

1.1.7-0ubuntu1~20.04.1

1.1.7-0ubuntu1~20.04.2

1.1.7-0ubuntu1~20.04.4

1.1.7-0ubuntu1~20.04.5

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-opencontainers-runc-dev",
            "binary_version": "1.1.7-0ubuntu1~20.04.5"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

runc-app

Package

Name: runc-app
Purl: pkg:deb/ubuntu/runc-app?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1.12-0ubuntu2~20.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "runc",
            "binary_version": "1.1.12-0ubuntu2~20.04.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

Ubuntu:22.04:LTS

runc

Package

Name: runc
Purl: pkg:deb/ubuntu/runc?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.1-0ubuntu2

1.0.1-0ubuntu3

1.0.3-0ubuntu1

1.1.0-0ubuntu1

1.1.0-0ubuntu1.1

1.1.4-0ubuntu1~22.04.1

1.1.4-0ubuntu1~22.04.2

1.1.4-0ubuntu1~22.04.3

1.1.7-0ubuntu1~22.04.1

1.1.7-0ubuntu1~22.04.2

1.1.7-0ubuntu1~22.04.4

1.1.7-0ubuntu1~22.04.5

1.1.7-0ubuntu1~22.04.6

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-opencontainers-runc-dev",
            "binary_version": "1.1.7-0ubuntu1~22.04.6"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

runc-app

Package

Name: runc-app
Purl: pkg:deb/ubuntu/runc-app?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1.12-0ubuntu2~22.04.1

1.2.5-0ubuntu1~22.04.1

1.3.0-0ubuntu2~22.04.1

1.3.3-0ubuntu1~22.04.2

1.3.3-0ubuntu1~22.04.3

1.3.4-0ubuntu1~22.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "runc",
            "binary_version": "1.3.4-0ubuntu1~22.04.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

Ubuntu:24.04:LTS

runc

Package

Name: runc
Purl: pkg:deb/ubuntu/runc?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1.7-0ubuntu2

1.1.10+ds1-1ubuntu1

1.1.10+ds1-1ubuntu2

1.1.12+ds1-1ubuntu1

1.1.12+ds1-2ubuntu1

1.1.12+ds1-2ubuntu1.1

1.1.12+ds1-2ubuntu1.2

1.1.12+ds1-2ubuntu1.3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-opencontainers-runc-dev",
            "binary_version": "1.1.12+ds1-2ubuntu1.3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

runc-app

Package

Name: runc-app
Purl: pkg:deb/ubuntu/runc-app?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1.10-0ubuntu1

1.1.12-0ubuntu1

1.1.12-0ubuntu2

1.1.12-0ubuntu3

1.1.12-0ubuntu3.1

1.2.5-0ubuntu1~24.04.1

1.3.0-0ubuntu2~24.04.1

1.3.3-0ubuntu1~24.04.2

1.3.3-0ubuntu1~24.04.3

1.3.4-0ubuntu1~24.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "runc",
            "binary_version": "1.3.4-0ubuntu1~24.04.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

Ubuntu:25.10

runc

Package

Name: runc
Purl: pkg:deb/ubuntu/runc?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1.15+ds1-2ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-opencontainers-runc-dev",
            "binary_version": "1.1.15+ds1-2ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

runc-app

Package

Name: runc-app
Purl: pkg:deb/ubuntu/runc-app?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.2.5-0ubuntu1

1.3.0-0ubuntu1

1.3.0-0ubuntu2

1.3.3-0ubuntu1~25.10.2

1.3.3-0ubuntu1~25.10.3

1.3.4-0ubuntu1~25.10.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "runc",
            "binary_version": "1.3.4-0ubuntu1~25.10.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

runc-stable

Package

Name: runc-stable
Purl: pkg:deb/ubuntu/runc-stable?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3.0-0ubuntu1

1.3.3-0ubuntu1~25.10.2

1.3.3-0ubuntu1~25.10.3

1.3.4-0ubuntu1~25.10.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "runc-stable",
            "binary_version": "1.3.4-0ubuntu1~25.10.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

Ubuntu:26.04:LTS

runc

Package

Name: runc
Purl: pkg:deb/ubuntu/runc?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1.15+ds1-2ubuntu1

1.3.3+ds1-2ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-opencontainers-runc-dev",
            "binary_version": "1.3.3+ds1-2ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

runc-app

Package

Name: runc-app
Purl: pkg:deb/ubuntu/runc-app?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3.0-0ubuntu2

1.3.3-0ubuntu1

1.3.3-0ubuntu2

1.4.0-0ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "runc",
            "binary_version": "1.4.0-0ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

runc-stable

Package

Name: runc-stable
Purl: pkg:deb/ubuntu/runc-stable?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3.0-0ubuntu1

1.3.3-0ubuntu1

1.3.3-0ubuntu2

1.3.4-0ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "runc-stable",
            "binary_version": "1.3.4-0ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

Ubuntu:Pro:16.04:LTS

runc

Package

Name: runc
Purl: pkg:deb/ubuntu/runc?arch=source&distro=esm-apps%2Fxenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.0.8+dfsg-2

0.1.1-0ubuntu5~16.04

1.*

1.0.0~rc1-0ubuntu1~16.04

1.0.0~rc1-0ubuntu2~16.04.1

1.0.0~rc1-0ubuntu2~16.04.1.1

1.0.0~rc2-0ubuntu2~16.04.1

1.0.0~rc2+docker1.12.6-0ubuntu1~16.04.1

1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.1

1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.2

1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.3

1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4

1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm1

1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm2

1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-opencontainers-runc-dev",
            "binary_version": "1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4"
        },
        {
            "binary_name": "runc",
            "binary_version": "1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"

Ubuntu:Pro:18.04:LTS

runc

Package

Name: runc
Purl: pkg:deb/ubuntu/runc?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.0~rc2+docker1.13.1-0ubuntu1

1.0.0~rc4+dfsg1-2

1.0.0~rc4+dfsg1-6

1.0.0~rc4+dfsg1-6ubuntu0.18.04.1

1.0.0~rc7+git20190403.029124da-0ubuntu1~18.04.1

1.0.0~rc7+git20190403.029124da-0ubuntu1~18.04.2

1.0.0~rc7+git20190403.029124da-0ubuntu1~18.04.2+esm1

1.0.0~rc10-0ubuntu1~18.04.1

1.0.0~rc10-0ubuntu1~18.04.2

1.0.0~rc93-0ubuntu1~18.04.1

1.0.0~rc93-0ubuntu1~18.04.2

1.0.0~rc95-0ubuntu1~18.04.1

1.0.0~rc95-0ubuntu1~18.04.2

1.0.1-0ubuntu2~18.04.1

1.1.0-0ubuntu1~18.04.1

1.1.4-0ubuntu1~18.04.1

1.1.4-0ubuntu1~18.04.2

1.1.4-0ubuntu1~18.04.2+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-opencontainers-runc-dev",
            "binary_version": "1.1.4-0ubuntu1~18.04.2+esm1"
        },
        {
            "binary_name": "runc",
            "binary_version": "1.1.4-0ubuntu1~18.04.2+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41579.json"