UBUNTU-CVE-2026-108119

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Source
https://ubuntu.com/security/CVE-2026-108119
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108119.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-108119
Upstream
  • CVE-2026-108119
Published
2026-10-09T17:16:00Z
Modified
2026-10-17T12:59:48Z
Severity
  • 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in busybox. The tar applet's deferred link-creation handling for symlink and hardlink entries with unsafe-looking targets does not validate that the resolved destination remains inside the extraction directory once the deferred link is created. An attacker can craft a tar archive using a symlink target of exactly '..' combined with a deferred hardlink to create a new file outside the extraction directory, or reuse an extraction directory across two archives to replace an existing file outside it. If the archive is extracted with elevated privileges, this flaw can lead to privilege escalation or arbitrary code execution.

References

Affected packages

Ubuntu:20.04:LTS
busybox

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.30.1-4ubuntu4
1:1.30.1-4ubuntu5
1:1.30.1-4ubuntu6
1:1.30.1-4ubuntu6.1
1:1.30.1-4ubuntu6.2
1:1.30.1-4ubuntu6.3
1:1.30.1-4ubuntu6.4
1:1.30.1-4ubuntu6.5

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "busybox",
            "binary_version":  "1:1.30.1-4ubuntu6.5"
        },
        {
            "binary_name":  "busybox-initramfs",
            "binary_version":  "1:1.30.1-4ubuntu6.5"
        },
        {
            "binary_name":  "busybox-static",
            "binary_version":  "1:1.30.1-4ubuntu6.5"
        },
        {
            "binary_name":  "busybox-syslogd",
            "binary_version":  "1:1.30.1-4ubuntu6.5"
        },
        {
            "binary_name":  "udhcpc",
            "binary_version":  "1:1.30.1-4ubuntu6.5"
        },
        {
            "binary_name":  "udhcpd",
            "binary_version":  "1:1.30.1-4ubuntu6.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108119.json"
Ubuntu:22.04:LTS
busybox

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.30.1-6ubuntu3
1:1.30.1-7ubuntu1
1:1.30.1-7ubuntu2
1:1.30.1-7ubuntu3
1:1.30.1-7ubuntu3.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "busybox",
            "binary_version":  "1:1.30.1-7ubuntu3.1"
        },
        {
            "binary_name":  "busybox-initramfs",
            "binary_version":  "1:1.30.1-7ubuntu3.1"
        },
        {
            "binary_name":  "busybox-static",
            "binary_version":  "1:1.30.1-7ubuntu3.1"
        },
        {
            "binary_name":  "busybox-syslogd",
            "binary_version":  "1:1.30.1-7ubuntu3.1"
        },
        {
            "binary_name":  "udhcpc",
            "binary_version":  "1:1.30.1-7ubuntu3.1"
        },
        {
            "binary_name":  "udhcpd",
            "binary_version":  "1:1.30.1-7ubuntu3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108119.json"
Ubuntu:24.04:LTS
busybox

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.36.1-3ubuntu1
1:1.36.1-6ubuntu1
1:1.36.1-6ubuntu3
1:1.36.1-6ubuntu3.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "busybox",
            "binary_version":  "1:1.36.1-6ubuntu3.1"
        },
        {
            "binary_name":  "busybox-initramfs",
            "binary_version":  "1:1.36.1-6ubuntu3.1"
        },
        {
            "binary_name":  "busybox-static",
            "binary_version":  "1:1.36.1-6ubuntu3.1"
        },
        {
            "binary_name":  "busybox-syslogd",
            "binary_version":  "1:1.36.1-6ubuntu3.1"
        },
        {
            "binary_name":  "udhcpc",
            "binary_version":  "1:1.36.1-6ubuntu3.1"
        },
        {
            "binary_name":  "udhcpd",
            "binary_version":  "1:1.36.1-6ubuntu3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108119.json"
Ubuntu:26.04:LTS
busybox

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.37.0-4ubuntu1
1:1.37.0-7ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "busybox",
            "binary_version":  "1:1.37.0-7ubuntu1"
        },
        {
            "binary_name":  "busybox-initramfs",
            "binary_version":  "1:1.37.0-7ubuntu1"
        },
        {
            "binary_name":  "busybox-static",
            "binary_version":  "1:1.37.0-7ubuntu1"
        },
        {
            "binary_name":  "busybox-syslogd",
            "binary_version":  "1:1.37.0-7ubuntu1"
        },
        {
            "binary_name":  "udhcpc",
            "binary_version":  "1:1.37.0-7ubuntu1"
        },
        {
            "binary_name":  "udhcpd",
            "binary_version":  "1:1.37.0-7ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108119.json"
Ubuntu:26.10
busybox

Package

Name
busybox
Purl
pkg:deb/ubuntu/busybox?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.37.0-7ubuntu1
1:1.37.0-10.1ubuntu2
1:1.37.0-10.1ubuntu3
1:1.38.0-3ubuntu1
1:1.38.0-3ubuntu3
1:1.38.0-3ubuntu4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "busybox",
            "binary_version":  "1:1.38.0-3ubuntu4"
        },
        {
            "binary_name":  "busybox-static",
            "binary_version":  "1:1.38.0-3ubuntu4"
        },
        {
            "binary_name":  "busybox-syslogd",
            "binary_version":  "1:1.38.0-3ubuntu4"
        },
        {
            "binary_name":  "udhcpc",
            "binary_version":  "1:1.38.0-3ubuntu4"
        },
        {
            "binary_name":  "udhcpd",
            "binary_version":  "1:1.38.0-3ubuntu4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108119.json"
Ubuntu:Pro:14.04:LTS
busybox

Package

Name
busybox
Purl
pkg:deb/ubuntu/busybox?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.20.0-8.1ubuntu1
1:1.20.0-9ubuntu1
1:1.20.0-9ubuntu2
1:1.21.0-1ubuntu1
1:1.21.0-1ubuntu1.4
1:1.21.0-1ubuntu1.4+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "busybox",
            "binary_version":  "1:1.21.0-1ubuntu1.4+esm1"
        },
        {
            "binary_name":  "busybox-initramfs",
            "binary_version":  "1:1.21.0-1ubuntu1.4+esm1"
        },
        {
            "binary_name":  "busybox-static",
            "binary_version":  "1:1.21.0-1ubuntu1.4+esm1"
        },
        {
            "binary_name":  "busybox-syslogd",
            "binary_version":  "1:1.21.0-1ubuntu1.4+esm1"
        },
        {
            "binary_name":  "udhcpc",
            "binary_version":  "1:1.21.0-1ubuntu1.4+esm1"
        },
        {
            "binary_name":  "udhcpd",
            "binary_version":  "1:1.21.0-1ubuntu1.4+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108119.json"
Ubuntu:Pro:16.04:LTS
busybox

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.22.0-15ubuntu1
1:1.22.0-15ubuntu1.4
1:1.22.0-15ubuntu1.4+esm1
1:1.22.0-15ubuntu1.4+esm2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "busybox",
            "binary_version":  "1:1.22.0-15ubuntu1.4+esm2"
        },
        {
            "binary_name":  "busybox-initramfs",
            "binary_version":  "1:1.22.0-15ubuntu1.4+esm2"
        },
        {
            "binary_name":  "busybox-static",
            "binary_version":  "1:1.22.0-15ubuntu1.4+esm2"
        },
        {
            "binary_name":  "busybox-syslogd",
            "binary_version":  "1:1.22.0-15ubuntu1.4+esm2"
        },
        {
            "binary_name":  "udhcpc",
            "binary_version":  "1:1.22.0-15ubuntu1.4+esm2"
        },
        {
            "binary_name":  "udhcpd",
            "binary_version":  "1:1.22.0-15ubuntu1.4+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108119.json"
Ubuntu:Pro:18.04:LTS
busybox

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.22.0-19ubuntu2
1:1.27.2-1ubuntu3
1:1.27.2-1ubuntu4
1:1.27.2-2ubuntu2
1:1.27.2-2ubuntu3
1:1.27.2-2ubuntu3.1
1:1.27.2-2ubuntu3.2
1:1.27.2-2ubuntu3.3
1:1.27.2-2ubuntu3.4
1:1.27.2-2ubuntu3.4+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "busybox",
            "binary_version":  "1:1.27.2-2ubuntu3.4+esm1"
        },
        {
            "binary_name":  "busybox-initramfs",
            "binary_version":  "1:1.27.2-2ubuntu3.4+esm1"
        },
        {
            "binary_name":  "busybox-static",
            "binary_version":  "1:1.27.2-2ubuntu3.4+esm1"
        },
        {
            "binary_name":  "busybox-syslogd",
            "binary_version":  "1:1.27.2-2ubuntu3.4+esm1"
        },
        {
            "binary_name":  "udhcpc",
            "binary_version":  "1:1.27.2-2ubuntu3.4+esm1"
        },
        {
            "binary_name":  "udhcpd",
            "binary_version":  "1:1.27.2-2ubuntu3.4+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108119.json"