Vulnerability-Lookup

UBUNTU-CVE-2026-116737 (CVE-2026-116737)

Vulnerability from osv_ubuntu – Published: 2026-10-26 22:16 – Updated: 2026-10-28 17:50 – Source website

Details

libphdi through 20260902 contains a heap out-of-bounds read vulnerability in libphdi_data_files_get_extent_data_file_path that uses the directory prefix length instead of the basename length. Attackers can supply a crafted Parallels disk image descriptor with a long directory prefix and short basename to crash the process or expose adjacent heap memory.

Severity

6.1 (Medium)


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

6.1 (Medium)


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

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

6.9 (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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-116737	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-116737	REPORT
	https://github.com/libyal/libphdi	REPORT
	https://github.com/cveproject/cvelistv5/tree/main…	REPORT
	https://github.com/libyal/libphdi/blob/20260902/l…	REPORT
	https://github.com/libyal/libphdi/commit/61e3e1f6…	REPORT
	https://github.com/libyal/libphdi/issues/6	REPORT
	https://hackmd.io/@haindpwn/libphdi-extent-data-f…	REPORT
	https://nvd.nist.gov/vuln/detail/cve-2026-116737	REPORT
	https://www.vulncheck.com/advisories/libphdi-thro…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libphdi-utils",
            "binary_version": "0~20240508-2build2"
          },
          {
            "binary_name": "libphdi1",
            "binary_version": "0~20240508-2build2"
          },
          {
            "binary_name": "python3-phdi",
            "binary_version": "0~20240508-2build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "libphdi",
        "purl": "pkg:deb/ubuntu/libphdi@0~20240508-2build2?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0~20240508-2build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libphdi-utils",
            "binary_version": "0~20240508-2build2"
          },
          {
            "binary_name": "libphdi1",
            "binary_version": "0~20240508-2build2"
          },
          {
            "binary_name": "python3-phdi",
            "binary_version": "0~20240508-2build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libphdi",
        "purl": "pkg:deb/ubuntu/libphdi@0~20240508-2build2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0~20240508-2build1",
        "0~20240508-2build2"
      ]
    }
  ],
  "aliases": [],
  "details": "libphdi through 20260902 contains a heap out-of-bounds read vulnerability in libphdi_data_files_get_extent_data_file_path that uses the directory prefix length instead of the basename length. Attackers can supply a crafted Parallels disk image descriptor with a long directory prefix and short basename to crash the process or expose adjacent heap memory.",
  "id": "UBUNTU-CVE-2026-116737",
  "modified": "2026-10-28T17:50:38Z",
  "published": "2026-10-26T22:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-116737"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-116737"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libphdi"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cveproject/cvelistv5/tree/main/cves/2026/116xxx/cve-2026-116737.json"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libphdi/blob/20260902/libphdi/libphdi_data_files.c#l890-l907"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libphdi/commit/61e3e1f6b4c5e15ce827b11858ba51f0dba254e3"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libphdi/issues/6"
    },
    {
      "type": "REPORT",
      "url": "https://hackmd.io/@haindpwn/libphdi-extent-data-file-path-heap-oob-read"
    },
    {
      "type": "REPORT",
      "url": "https://nvd.nist.gov/vuln/detail/cve-2026-116737"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/libphdi-through-20260902-heap-out-of-bounds-read-via-extent-data-file-path"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-116737"
  ]
}

CVE-2026-116737 (GCVE-0-2026-116737)

Vulnerability from cvelistv5 – Published: 2026-10-26 21:52 – Updated: 2026-11-02 18:28

Title

libphdi through 20260902 Heap Out-of-Bounds Read via Extent Data File Path

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: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-02 18:27 UTC

CWE

CWE-131 - Incorrect Calculation of Buffer Size

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7402 records in the last 180 days details

References

7 references

URL	Tags
https://github.com/libyal/libphdi/issues/6	issue-tracking
https://github.com/libyal/libphdi	product
https://github.com/libyal/libphdi/commit/61e3e1f6…	patch
https://github.com/libyal/libphdi/blob/20260902/l…	technical-description
https://hackmd.io/@haindpwn/libphdi-extent-data-f…	third-party-advisory
https://www.vulncheck.com/advisories/libphdi-thro…	third-party-advisory
https://hackmd.io/@haindpwn/cve-2026-116737-libph…	exploit

Impacted products

1 product

Vendor	Product	Version
libyal	libphdi	Affected: 0 , ≤ 20260902 (custom)

Date Public

2026-10-22 00:00

Credits

HaiND from the Post and Telecommunication Institute of Technology

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-116737",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-02T18:27:09.156170Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-11-02T18:28:30.467Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://hackmd.io/@haindpwn/cve-2026-116737-libphdi-extent-data-file-path-heap-oob-read"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/libyal/libphdi",
          "product": "libphdi",
          "repo": "https://github.com/libyal/libphdi",
          "vendor": "libyal",
          "versions": [
            {
              "lessThanOrEqual": "20260902",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-22T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "libphdi through 20260902 contains a heap out-of-bounds read vulnerability in libphdi_data_files_get_extent_data_file_path that uses the directory prefix length instead of the basename length. Attackers can supply a crafted Parallels disk image descriptor with a long directory prefix and short basename to crash the process or expose adjacent heap memory."
        }
      ],
      "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": {
            "attackComplexity": "LOW",
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            "availabilityImpact": "HIGH",
            "baseScore": 6.1,
            "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",
            "version": "3.1"
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        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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          "name": "GitHub Issue #6",
          "tags": [
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          "url": "https://github.com/libyal/libphdi/issues/6"
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          "tags": [
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          "url": "https://github.com/libyal/libphdi"
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          "url": "https://github.com/libyal/libphdi/commit/61e3e1f6b4c5e15ce827b11858ba51f0dba254e3"
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          "url": "https://github.com/libyal/libphdi/blob/20260902/libphdi/libphdi_data_files.c#L890-L907"
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          "tags": [
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          "url": "https://hackmd.io/@haindpwn/libphdi-extent-data-file-path-heap-oob-read"
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    "datePublished": "2026-10-26T21:52:37.080Z",
    "dateReserved": "2026-10-26T20:23:35.945Z",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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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UBUNTU-CVE-2026-116737 (CVE-2026-116737)

CVE-2026-116737 (GCVE-0-2026-116737)

Tags

Sightings

Nomenclature

Vulnerability timeline

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