UBUNTU-CVE-2026-6042

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Source
https://ubuntu.com/security/CVE-2026-6042
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6042.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-6042
Upstream
  • CVE-2026-6042
Published
2026-04-10T09:16:00Z
Modified
2026-05-20T16:26:25.972219298Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A security flaw has been discovered in musl libc up to 1.2.6. Affected is the function iconv of the file src/locale/iconv.c of the component GB18030 4-byte Decoder. Performing a manipulation results in inefficient algorithmic complexity. The attack must be initiated from a local position. To fix this issue, it is recommended to deploy a patch.

References

Affected packages

Ubuntu:22.04:LTS
musl

Package

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

Affected ranges

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

Affected versions

1.*
1.2.2-1
1.2.2-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "musl",
            "binary_version": "1.2.2-4"
        },
        {
            "binary_name": "musl-tools",
            "binary_version": "1.2.2-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6042.json"
Ubuntu:24.04:LTS
musl

Package

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

Affected ranges

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

Affected versions

1.*
1.2.3-1
1.2.4-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "musl",
            "binary_version": "1.2.4-2"
        },
        {
            "binary_name": "musl-tools",
            "binary_version": "1.2.4-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6042.json"
Ubuntu:25.10
musl

Package

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

Affected ranges

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

Affected versions

1.*
1.2.5-2
1.2.5-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "musl",
            "binary_version": "1.2.5-3"
        },
        {
            "binary_name": "musl-tools",
            "binary_version": "1.2.5-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6042.json"
Ubuntu:26.04:LTS
musl

Package

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

Affected ranges

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

Affected versions

1.*
1.2.5-3
1.2.5-3build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "musl",
            "binary_version": "1.2.5-3build1"
        },
        {
            "binary_name": "musl-tools",
            "binary_version": "1.2.5-3build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6042.json"
Ubuntu:Pro:14.04:LTS
musl

Package

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

Affected ranges

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

Affected versions

0.*
0.9.14-2
0.9.14-2ubuntu1
0.9.15-1
0.9.15-1ubuntu0.1~esm1
0.9.15-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "musl",
            "binary_version": "0.9.15-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "musl-tools",
            "binary_version": "0.9.15-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6042.json"
Ubuntu:Pro:16.04:LTS
musl

Package

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

Affected ranges

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

Affected versions

1.*
1.1.9-1
1.1.9-1ubuntu0.1~esm2
1.1.9-1ubuntu0.1~esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "musl",
            "binary_version": "1.1.9-1ubuntu0.1~esm3"
        },
        {
            "binary_name": "musl-tools",
            "binary_version": "1.1.9-1ubuntu0.1~esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6042.json"
Ubuntu:Pro:18.04:LTS
musl

Package

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

Affected ranges

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

Affected versions

1.*
1.1.16-3
1.1.18-1
1.1.19-1
1.1.19-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "musl",
            "binary_version": "1.1.19-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "musl-tools",
            "binary_version": "1.1.19-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6042.json"
Ubuntu:Pro:20.04:LTS
musl

Package

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

Affected ranges

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

Affected versions

1.*
1.1.23-2build1
1.1.24-1
1.1.24-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "musl",
            "binary_version": "1.1.24-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "musl-tools",
            "binary_version": "1.1.24-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6042.json"