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musl — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2025-26519

musl libc 0.9.13 through 1.2.5 before 1.2.6 has an out-of-bounds write vulnerability when an attacker can trigger iconv conversion of untrusted EUC-KR text to UTF-8.

Products
musl
Affected versions
0.9.14-2, 0.9.14-2ubuntu1, 0.9.15-1, 0.9.15-1ubuntu0.1~esm1, 0.9.15-1ubuntu0.1~esm2, 1.1.16-3, 1.1.18-1, 1.1.19-1, 1.1.19-1ubuntu0.1~esm1, 1.1.23-2build1, 1.1.24-1, 1.1.24-1ubuntu0.1~esm1, 1.1.9-1, 1.1.9-1ubuntu0.1~esm2, 1.1.9-1ubuntu0.1~esm3, 1.2.2-1, 1.2.2-4, 1.2.3-1, 1.2.4-2, 1.2.5-2, 1.2.5-3, 1.2.5-3build1, 1.2.6-1
Fixed versions
Not specified
CVEs
CVE-2025-26519
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 01:47 UTC · Revision 1

Source evidence

UBUNTU-CVE-2025-26519

core-osv · Original source

Published 14 Feb 2025, 04:15 UTC

musl libc 0.9.13 through 1.2.5 before 1.2.6 has an out-of-bounds write vulnerability when an attacker can trigger iconv conversion of untrusted EUC-KR text to UTF-8.

osv:UBUNTU-CVE-2025-26519

musl

Fixed versions: Not specified

musl

Fixed versions: Not specified

musl

Fixed versions: Not specified

musl

Fixed versions: Not specified

musl

Fixed versions: Not specified

musl

Fixed versions: Not specified

musl

Fixed versions: Not specified

musl

Fixed versions: Not specified

musl

Fixed versions: Not specified

Complete source record
{
  "id": "1e1064243f89349d86ba31e95f7c02b339d120b75a8af8af6a294ccf7911763f",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-26519",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2025-26519",
    "summary": "musl libc 0.9.13 through 1.2.5 before 1.2.6 has an out-of-bounds write vulnerability when an attacker can trigger iconv conversion of untrusted EUC-KR text to UTF-8.",
    "evidence": "osv:UBUNTU-CVE-2025-26519",
    "products": [
      {
        "name": {
          "value": "musl",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.9.14-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.9.14-2ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.9.15-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.9.15-1ubuntu0.1~esm1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.9.15-1ubuntu0.1~esm2",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "musl",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.1.9-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.1.9-1ubuntu0.1~esm2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.1.9-1ubuntu0.1~esm3",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "musl",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.1.16-3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.1.18-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.1.19-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.1.19-1ubuntu0.1~esm1",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "musl",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.1.23-2build1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.1.24-1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.1.24-1ubuntu0.1~esm1",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "musl",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.2-1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.2.2-4",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "musl",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.3-1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.2.4-2",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "musl",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.5-2",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "1.2.5-3",
            "evidence": "/affected/6/versions"
          }
        ]
      },
      {
        "name": {
          "value": "musl",
          "evidence": "/affected/7/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.5-3build1",
            "evidence": "/affected/7/versions"
          },
          {
            "value": "1.2.6-1",
            "evidence": "/affected/7/versions"
          }
        ]
      },
      {
        "name": {
          "value": "musl",
          "evidence": "/affected/8/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.5-3",
            "evidence": "/affected/8/versions"
          },
          {
            "value": "1.2.5-3build1",
            "evidence": "/affected/8/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2025-26519",
      "aliases": [
        "UBUNTU-CVE-2025-26519"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L"
        },
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "musl",
            "purl": "pkg:deb/ubuntu/musl?arch=source&distro=esm-infra-legacy%2Ftrusty",
            "ecosystem": "Ubuntu:Pro:14.04:LTS"
          },
          "versions": [
            "0.9.14-2",
            "0.9.14-2ubuntu1",
            "0.9.15-1",
            "0.9.15-1ubuntu0.1~esm1",
            "0.9.15-1ubuntu0.1~esm2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-26519.json"
          },
          "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"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "musl",
            "purl": "pkg:deb/ubuntu/musl?arch=source&distro=esm-apps%2Fxenial",
            "ecosystem": "Ubuntu:Pro:16.04:LTS"
          },
          "versions": [
            "1.1.9-1",
            "1.1.9-1ubuntu0.1~esm2",
            "1.1.9-1ubuntu0.1~esm3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-26519.json"
          },
          "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"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "musl",
            "purl": "pkg:deb/ubuntu/musl?arch=source&distro=esm-apps%2Fbionic",
            "ecosystem": "Ubuntu:Pro:18.04:LTS"
          },
          "versions": [
            "1.1.16-3",
            "1.1.18-1",
            "1.1.19-1",
            "1.1.19-1ubuntu0.1~esm1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-26519.json"
          },
          "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"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "musl",
            "purl": "pkg:deb/ubuntu/musl?arch=source&distro=esm-apps%2Ffocal",
            "ecosystem": "Ubuntu:Pro:20.04:LTS"
          },
          "versions": [
            "1.1.23-2build1",
            "1.1.24-1",
            "1.1.24-1ubuntu0.1~esm1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-26519.json"
          },
          "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"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "musl",
            "purl": "pkg:deb/ubuntu/musl?arch=source&distro=jammy",
            "ecosystem": "Ubuntu:22.04:LTS"
          },
          "versions": [
            "1.2.2-1",
            "1.2.2-4"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-26519.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "musl",
                "binary_version": "1.2.2-4"
              },
              {
                "binary_name": "musl-tools",
                "binary_version": "1.2.2-4"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
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          ],
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            "purl": "pkg:deb/ubuntu/musl?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
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            "1.2.3-1",
            "1.2.4-2"
          ],
          "database_specific": {
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          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "musl",
                "binary_version": "1.2.4-2"
              },
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                "binary_version": "1.2.4-2"
              }
            ]
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        },
        {
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            {
              "type": "ECOSYSTEM",
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                {
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                }
              ]
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          ],
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            "name": "musl",
            "purl": "pkg:deb/ubuntu/musl?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "1.2.5-2",
            "1.2.5-3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-26519.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "musl",
                "binary_version": "1.2.5-3"
              },
              {
                "binary_name": "musl-tools",
                "binary_version": "1.2.5-3"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "musl",
            "purl": "pkg:deb/ubuntu/musl?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "1.2.5-3build1",
            "1.2.6-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-26519.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "musl",
                "binary_version": "1.2.6-1"
              },
              {
                "binary_name": "musl-tools",
                "binary_version": "1.2.6-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "musl",
            "purl": "pkg:deb/ubuntu/musl?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "1.2.5-3",
            "1.2.5-3build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-26519.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "musl",
                "binary_version": "1.2.5-3build1"
              },
              {
                "binary_name": "musl-tools",
                "binary_version": "1.2.5-3build1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:57:26.965589407Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-26519"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2025-26519",
        "https://www.cve.org/CVERecord?id=CVE-2025-26519",
        "https://git.musl-libc.org/cgit/musl/commit/?id=c47ad25ea3b484e10326f933e927c0bc8cded3da",
        "https://git.musl-libc.org/cgit/musl/commit/?id=e5adcd97b5196e29991b524237381a0202a60659",
        "https://www.openwall.com/lists/oss-security/2025/02/13/2"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-26519",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 357501,
  "published_at": "2025-02-14T04:15:00+00:00"
}