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ntfs-3g — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-56136

In NTFS-3G through 2026.2.25, an out-of-bounds read exists in ntfs_ir_nill() in libntfs-3g/index.c that allows an attacker to read possibly confidential information in an ntfs-3g process by crafting a malicious NTFS image. This read operation is triggered by creation of a file with a crafted name.

Products
ntfs-3g
Affected versions
1:2022.10.3-1, 1:2022.10.3-1+deb12u1, 1:2022.10.3-1+deb12u2, 1:2022.10.3-1+deb12u3, 1:2022.10.3-1.1, 1:2022.10.3-1.1~exp1, 1:2022.10.3-1.2, 1:2022.10.3-2, 1:2022.10.3-3, 1:2022.10.3-4, 1:2022.10.3-5, 1:2022.10.3-5+deb13u1, 1:2026.2.25-1, 1:2026.7.7-1, 1:2026.7.7-2, 1:2026.9.18-1, 1:2026.9.28-1, 1:2026.9.28-2
Fixed versions
1:2022.10.3-5+deb13u2, 1:2026.7.7-2
CVEs
CVE-2026-56136
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 16:16 UTC · Revision 1

Source evidence

DEBIAN-CVE-2026-56136

core-osv · Original source

Published 24 Aug 2026, 21:17 UTC

In NTFS-3G through 2026.2.25, an out-of-bounds read exists in ntfs_ir_nill() in libntfs-3g/index.c that allows an attacker to read possibly confidential information in an ntfs-3g process by crafting a malicious NTFS image. This read operation is triggered by creation of a file with a crafted name.

osv:DEBIAN-CVE-2026-56136

ntfs-3g

Fixed versions: Not specified

ntfs-3g

Fixed versions: 1:2022.10.3-5+deb13u2

ntfs-3g

Fixed versions: 1:2026.7.7-2

Complete source record
{
  "id": "85059b9e094da150014863bbc22a621b4747e3da92a5b046fb5430cf33178212",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-56136",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-56136",
    "summary": "In NTFS-3G through 2026.2.25, an out-of-bounds read exists in ntfs_ir_nill() in libntfs-3g/index.c that allows an attacker to read possibly confidential information in an ntfs-3g process by crafting a malicious NTFS image. This read operation is triggered by creation of a file with a crafted name.",
    "evidence": "osv:DEBIAN-CVE-2026-56136",
    "products": [
      {
        "name": {
          "value": "ntfs-3g",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:2022.10.3-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-1+deb12u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-1+deb12u2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-1+deb12u3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-1.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-1.1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-1.2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2022.10.3-5",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2026.2.25-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2026.7.7-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2026.7.7-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2026.9.18-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2026.9.28-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:2026.9.28-2",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "ntfs-3g",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:2022.10.3-5+deb13u2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1:2022.10.3-5",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:2022.10.3-5+deb13u1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "ntfs-3g",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:2026.7.7-2",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1:2022.10.3-5",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1:2026.2.25-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1:2026.7.7-1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2026-56136",
      "aliases": [
        "DEBIAN-CVE-2026-56136"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "ntfs-3g",
            "purl": "pkg:deb/debian/ntfs-3g?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "1:2022.10.3-1",
            "1:2022.10.3-1+deb12u1",
            "1:2022.10.3-1+deb12u2",
            "1:2022.10.3-1+deb12u3",
            "1:2022.10.3-1.1",
            "1:2022.10.3-1.1~exp1",
            "1:2022.10.3-1.2",
            "1:2022.10.3-2",
            "1:2022.10.3-3",
            "1:2022.10.3-4",
            "1:2022.10.3-5",
            "1:2026.2.25-1",
            "1:2026.7.7-1",
            "1:2026.7.7-2",
            "1:2026.9.18-1",
            "1:2026.9.28-1",
            "1:2026.9.28-2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56136.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:2022.10.3-5+deb13u2"
                }
              ]
            }
          ],
          "package": {
            "name": "ntfs-3g",
            "purl": "pkg:deb/debian/ntfs-3g?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "1:2022.10.3-5",
            "1:2022.10.3-5+deb13u1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56136.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:2026.7.7-2"
                }
              ]
            }
          ],
          "package": {
            "name": "ntfs-3g",
            "purl": "pkg:deb/debian/ntfs-3g?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "1:2022.10.3-5",
            "1:2026.2.25-1",
            "1:2026.7.7-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56136.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-15T09:47:26.986910398Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-56136"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-56136"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-56136",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 327331,
  "published_at": "2026-08-24T21:17:42.38+00:00"
}