Vulnerability-Lookup

UBUNTU-CVE-2026-107635 (CVE-2026-107635)

Vulnerability from osv_ubuntu – Published: 2026-10-08 15:17 – Updated: 2026-10-17 10:01 – Source website

Details

Dislocker through 0.7.3 contains an integer underflow vulnerability in get_vmk() and get_fvek() that allows attackers to trigger out-of-bounds heap reads via crafted datum sizes. Attackers can supply a malicious BitLocker volume image with a datum_size smaller than the 36-byte AES-CCM header, causing hexdump() to over-read and crash dislocker.

Severity

5.5 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

6.8 (Medium)


                    
                      CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-107635	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-107635	REPORT
	https://github.com/Aorimn/dislocker	REPORT
	https://github.com/Aorimn/dislocker/blob/v0.7.3/s…	REPORT
	https://github.com/Aorimn/dislocker/blob/v0.7.3/s…	REPORT
	https://github.com/Aorimn/dislocker/commit/070646…	REPORT
	https://www.vulncheck.com/advisories/dislocker-th…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "dislocker",
            "binary_version": "0.7.1-3build3"
          },
          {
            "binary_name": "libdislocker0.7",
            "binary_version": "0.7.1-3build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "dislocker",
        "purl": "pkg:deb/ubuntu/dislocker@0.7.1-3build3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.1-7",
        "0.7.1-3",
        "0.7.1-3build1",
        "0.7.1-3build2",
        "0.7.1-3build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "dislocker",
            "binary_version": "0.7.1-5"
          },
          {
            "binary_name": "libdislocker0.7",
            "binary_version": "0.7.1-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "dislocker",
        "purl": "pkg:deb/ubuntu/dislocker@0.7.1-5?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.1-4build1",
        "0.7.1-5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "dislocker",
            "binary_version": "0.7.3-2ubuntu2"
          },
          {
            "binary_name": "libdislocker0.7",
            "binary_version": "0.7.3-2ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "dislocker",
        "purl": "pkg:deb/ubuntu/dislocker@0.7.3-2ubuntu2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.3-2",
        "0.7.3-2ubuntu1",
        "0.7.3-2ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "dislocker",
            "binary_version": "0.7.3-3.1build2"
          },
          {
            "binary_name": "libdislocker0.7t64",
            "binary_version": "0.7.3-3.1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "dislocker",
        "purl": "pkg:deb/ubuntu/dislocker@0.7.3-3.1build2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.3-2.1ubuntu2",
        "0.7.3-3",
        "0.7.3-3.1",
        "0.7.3-3.1build1",
        "0.7.3-3.1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "dislocker",
            "binary_version": "0.7.3+git20250907-1"
          },
          {
            "binary_name": "libdislocker0.7t64",
            "binary_version": "0.7.3+git20250907-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "dislocker",
        "purl": "pkg:deb/ubuntu/dislocker@0.7.3+git20250907-1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.3+git20250907-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "dislocker",
            "binary_version": "0.7.3+git20250907-1"
          },
          {
            "binary_name": "libdislocker0.7t64",
            "binary_version": "0.7.3+git20250907-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "dislocker",
        "purl": "pkg:deb/ubuntu/dislocker@0.7.3+git20250907-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.3+git20240607-3build1",
        "0.7.3+git20250907-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Dislocker through 0.7.3 contains an integer underflow vulnerability in get_vmk() and get_fvek() that allows attackers to trigger out-of-bounds heap reads via crafted datum sizes. Attackers can supply a malicious BitLocker volume image with a datum_size smaller than the 36-byte AES-CCM header, causing hexdump() to over-read and crash dislocker.",
  "id": "UBUNTU-CVE-2026-107635",
  "modified": "2026-10-17T10:01:22Z",
  "published": "2026-10-08T15:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-107635"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-107635"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Aorimn/dislocker"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/fvek.c#L90-L105"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/vmk.c#L146-L180"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Aorimn/dislocker/commit/0706462db88efe8df88150e4c3e4332b808f4581"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/dislocker-through-0.7.3-out-of-bounds-heap-read-via-vmk-fvek-datum-size-underflow"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-107635"
  ]
}

CVE-2026-107635 (GCVE-0-2026-107635)

Vulnerability from cvelistv5 – Published: 2026-10-08 14:10 – Updated: 2026-10-16 11:38

Title

Dislocker through 0.7.3 Out-of-Bounds Heap Read via VMK/FVEK Datum Size Underflow

Summary

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

6.1 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-08 16:05 UTC

CWE

CWE-191 - Integer Underflow (Wrap or Wraparound)

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6476 records in the last 180 days details

References

5 references

URL	Tags
https://github.com/Aorimn/dislocker/commit/070646…	patch
https://github.com/Aorimn/dislocker/blob/v0.7.3/s…	technical-description
https://github.com/Aorimn/dislocker/blob/v0.7.3/s…	technical-description
https://github.com/Aorimn/dislocker	product
https://www.vulncheck.com/advisories/dislocker-th…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Aorimn	dislocker	Affected: 0 , ≤ 0.7.3 (custom)

Date Public

2026-08-31 00:00

Credits

Tristan Madani (@TristanInSec), Talence Security

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-107635",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-08T16:05:14.829892Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-08T16:05:30.813Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
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          "product": "dislocker",
          "vendor": "Aorimn",
          "versions": [
            {
              "lessThanOrEqual": "0.7.3",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
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        }
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          "type": "finder",
          "value": "Tristan Madani (@TristanInSec), Talence Security"
        }
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      "datePublic": "2026-08-31T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Dislocker through 0.7.3 contains an integer underflow vulnerability in get_vmk() and get_fvek() that allows attackers to trigger out-of-bounds heap reads via crafted datum sizes. Attackers can supply a malicious BitLocker volume image with a datum_size smaller than the 36-byte AES-CCM header, causing hexdump() to over-read and crash dislocker."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
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            "attackVector": "LOCAL",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
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          "url": "https://github.com/Aorimn/dislocker"
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    "dateReserved": "2026-10-08T14:05:59.396Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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