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DEBIAN-CVE-2026-6042

Type: advisorySource: OSV1 source record

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.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-6042

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-2026-6042

musl

Source reference: /affected/0/package/name

Affected versions
1.2.3-1

Source reference: /affected/0/versions

1.2.4-1

Source reference: /affected/0/versions

1.2.4-2

Source reference: /affected/0/versions

1.2.5-1

Source reference: /affected/0/versions

1.2.5-1.1

Source reference: /affected/0/versions

1.2.5-2

Source reference: /affected/0/versions

1.2.5-3

Source reference: /affected/0/versions

1.2.5-3.1

Source reference: /affected/0/versions

1.2.5-3.1~deb13u1

Source reference: /affected/0/versions

1.2.6-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

musl

Source reference: /affected/1/package/name

Affected versions
1.2.5-3

Source reference: /affected/1/versions

Fixed versions
1.2.5-3.1~deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

musl

Source reference: /affected/2/package/name

Affected versions
1.2.5-3

Source reference: /affected/2/versions

1.2.5-3.1~deb13u1

Source reference: /affected/2/versions

Fixed versions
1.2.5-3.1

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": "musl",
      "purl": "pkg:deb/debian/musl?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.2.3-1",
      "1.2.4-1",
      "1.2.4-2",
      "1.2.5-1",
      "1.2.5-1.1",
      "1.2.5-2",
      "1.2.5-3",
      "1.2.5-3.1",
      "1.2.5-3.1~deb13u1",
      "1.2.6-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6042.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.2.5-3.1~deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "musl",
      "purl": "pkg:deb/debian/musl?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.2.5-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6042.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.2.5-3.1"
          }
        ]
      }
    ],
    "package": {
      "name": "musl",
      "purl": "pkg:deb/debian/musl?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.2.5-3",
      "1.2.5-3.1~deb13u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6042.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#58066 · Revision 1
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Publisher date
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