UBUNTU-CVE-2026-4111

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Source
https://ubuntu.com/security/CVE-2026-4111
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4111.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-4111
Upstream
  • CVE-2026-4111
Downstream
Related
Published
2026-03-13T19:55:00Z
Modified
2026-04-07T12:49:34.907299Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archivereaddata() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives.

References

Affected packages

Ubuntu:22.04:LTS
libarchive

Package

Name
libarchive
Purl
pkg:deb/ubuntu/libarchive@3.6.0-1ubuntu1.6?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.6.0-1ubuntu1.6

Affected versions

3.*
3.4.3-2
3.4.3-2build1
3.5.2-1
3.5.2-1ubuntu1
3.6.0-1ubuntu1
3.6.0-1ubuntu1.1
3.6.0-1ubuntu1.2
3.6.0-1ubuntu1.3
3.6.0-1ubuntu1.4
3.6.0-1ubuntu1.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libarchive-dev",
            "binary_version": "3.6.0-1ubuntu1.6"
        },
        {
            "binary_name": "libarchive-tools",
            "binary_version": "3.6.0-1ubuntu1.6"
        },
        {
            "binary_name": "libarchive13",
            "binary_version": "3.6.0-1ubuntu1.6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4111.json"
Ubuntu:24.04:LTS
libarchive

Package

Name
libarchive
Purl
pkg:deb/ubuntu/libarchive@3.7.2-2ubuntu0.6?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.2-2ubuntu0.6

Affected versions

3.*
3.6.2-1ubuntu1
3.7.2-1ubuntu1
3.7.2-1ubuntu2
3.7.2-1.1ubuntu2
3.7.2-2
3.7.2-2ubuntu0.1
3.7.2-2ubuntu0.2
3.7.2-2ubuntu0.3
3.7.2-2ubuntu0.4
3.7.2-2ubuntu0.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libarchive-dev",
            "binary_version": "3.7.2-2ubuntu0.6"
        },
        {
            "binary_name": "libarchive-tools",
            "binary_version": "3.7.2-2ubuntu0.6"
        },
        {
            "binary_name": "libarchive13t64",
            "binary_version": "3.7.2-2ubuntu0.6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4111.json"
Ubuntu:25.10
libarchive

Package

Name
libarchive
Purl
pkg:deb/ubuntu/libarchive@3.7.7-0ubuntu3.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.7-0ubuntu3.1

Affected versions

3.*
3.7.7-0ubuntu2
3.7.7-0ubuntu2.1
3.7.7-0ubuntu2.2
3.7.7-0ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libarchive-dev",
            "binary_version": "3.7.7-0ubuntu3.1"
        },
        {
            "binary_name": "libarchive-tools",
            "binary_version": "3.7.7-0ubuntu3.1"
        },
        {
            "binary_name": "libarchive13t64",
            "binary_version": "3.7.7-0ubuntu3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4111.json"
Ubuntu:Pro:14.04:LTS
libarchive

Package

Name
libarchive
Purl
pkg:deb/ubuntu/libarchive@3.1.2-7ubuntu2.8+esm4?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.2-7ubuntu2.8+esm4

Affected versions

3.*
3.1.2-5ubuntu1
3.1.2-7ubuntu1
3.1.2-7ubuntu2
3.1.2-7ubuntu2.1
3.1.2-7ubuntu2.2
3.1.2-7ubuntu2.3
3.1.2-7ubuntu2.4
3.1.2-7ubuntu2.6
3.1.2-7ubuntu2.7
3.1.2-7ubuntu2.8
3.1.2-7ubuntu2.8+esm1
3.1.2-7ubuntu2.8+esm3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "bsdcpio",
            "binary_version": "3.1.2-7ubuntu2.8+esm4"
        },
        {
            "binary_name": "bsdtar",
            "binary_version": "3.1.2-7ubuntu2.8+esm4"
        },
        {
            "binary_name": "libarchive-dev",
            "binary_version": "3.1.2-7ubuntu2.8+esm4"
        },
        {
            "binary_name": "libarchive13",
            "binary_version": "3.1.2-7ubuntu2.8+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4111.json"
Ubuntu:Pro:16.04:LTS
libarchive

Package

Name
libarchive
Purl
pkg:deb/ubuntu/libarchive@3.1.2-11ubuntu0.16.04.8+esm2?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.2-11ubuntu0.16.04.8+esm2

Affected versions

3.*
3.1.2-11build1
3.1.2-11ubuntu0.16.04.1
3.1.2-11ubuntu0.16.04.2
3.1.2-11ubuntu0.16.04.3
3.1.2-11ubuntu0.16.04.4
3.1.2-11ubuntu0.16.04.5
3.1.2-11ubuntu0.16.04.6
3.1.2-11ubuntu0.16.04.7
3.1.2-11ubuntu0.16.04.8
3.1.2-11ubuntu0.16.04.8+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "bsdcpio",
            "binary_version": "3.1.2-11ubuntu0.16.04.8+esm2"
        },
        {
            "binary_name": "bsdtar",
            "binary_version": "3.1.2-11ubuntu0.16.04.8+esm2"
        },
        {
            "binary_name": "libarchive-dev",
            "binary_version": "3.1.2-11ubuntu0.16.04.8+esm2"
        },
        {
            "binary_name": "libarchive13",
            "binary_version": "3.1.2-11ubuntu0.16.04.8+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4111.json"
Ubuntu:Pro:18.04:LTS
libarchive

Package

Name
libarchive
Purl
pkg:deb/ubuntu/libarchive@3.2.2-3.1ubuntu0.7+esm2?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.2.2-3.1ubuntu0.7+esm2

Affected versions

3.*
3.2.2-3.1
3.2.2-3.1ubuntu0.1
3.2.2-3.1ubuntu0.2
3.2.2-3.1ubuntu0.3
3.2.2-3.1ubuntu0.4
3.2.2-3.1ubuntu0.5
3.2.2-3.1ubuntu0.6
3.2.2-3.1ubuntu0.7
3.2.2-3.1ubuntu0.7+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "bsdcpio",
            "binary_version": "3.2.2-3.1ubuntu0.7+esm2"
        },
        {
            "binary_name": "bsdtar",
            "binary_version": "3.2.2-3.1ubuntu0.7+esm2"
        },
        {
            "binary_name": "libarchive-dev",
            "binary_version": "3.2.2-3.1ubuntu0.7+esm2"
        },
        {
            "binary_name": "libarchive-tools",
            "binary_version": "3.2.2-3.1ubuntu0.7+esm2"
        },
        {
            "binary_name": "libarchive13",
            "binary_version": "3.2.2-3.1ubuntu0.7+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4111.json"
Ubuntu:Pro:20.04:LTS
libarchive

Package

Name
libarchive
Purl
pkg:deb/ubuntu/libarchive@3.4.0-2ubuntu1.5+esm1?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.4.0-2ubuntu1.5+esm1

Affected versions

3.*
3.4.0-1
3.4.0-1build1
3.4.0-1ubuntu2
3.4.0-2ubuntu1
3.4.0-2ubuntu1.1
3.4.0-2ubuntu1.2
3.4.0-2ubuntu1.3
3.4.0-2ubuntu1.4
3.4.0-2ubuntu1.5

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libarchive-dev",
            "binary_version": "3.4.0-2ubuntu1.5+esm1"
        },
        {
            "binary_name": "libarchive-tools",
            "binary_version": "3.4.0-2ubuntu1.5+esm1"
        },
        {
            "binary_name": "libarchive13",
            "binary_version": "3.4.0-2ubuntu1.5+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4111.json"