Vulnerability-Lookup

GHSA-6V96-8W62-7PPX

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33

Details

In the Linux kernel, the following vulnerability has been resolved:

ntfs: add bounds check before accessing EA entries

in ntfs_ea_lookup and ntfs_listxattr, this verifies that there is enough space in the EA entry before accessing the next_entry_offset field of the EA entry.

Severity

9.8 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72208"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:39Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: add bounds check before accessing EA entries\n\nin ntfs_ea_lookup and ntfs_listxattr, this verifies that there is enough\nspace in the EA entry before accessing the next_entry_offset field of\nthe EA entry.",
  "id": "GHSA-6v96-8w62-7ppx",
  "modified": "2026-08-17T06:33:16Z",
  "published": "2026-08-15T06:32:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72208"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/937282f7d15b593d0be765fa2ced164130ec87f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9d9925de1d8f233cc60d3dc356e12f232f97c15"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-72208 (GCVE-0-2026-72208)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:54 – Updated: 2026-08-18 06:56

Title

ntfs: add bounds check before accessing EA entries

Summary

In the Linux kernel, the following vulnerability has been resolved: ntfs: add bounds check before accessing EA entries in ntfs_ea_lookup and ntfs_listxattr, this verifies that there is enough space in the EA entry before accessing the next_entry_offset field of the EA entry.

Severity

9.8 (Critical)


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

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/d9d9925de1d8f233c…
https://git.kernel.org/stable/c/937282f7d15b593d0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c451d34ae14201c2bb40652bf74072a79ff82f7d , < d9d9925de1d8f233cc60d3dc356e12f232f97c15 (git) Affected: c451d34ae14201c2bb40652bf74072a79ff82f7d , < 937282f7d15b593d0be765fa2ced164130ec87f7 (git)
Linux	Linux	Affected: 7.1 Unaffected: 0 , < 7.1 (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs/ea.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d9d9925de1d8f233cc60d3dc356e12f232f97c15",
              "status": "affected",
              "version": "c451d34ae14201c2bb40652bf74072a79ff82f7d",
              "versionType": "git"
            },
            {
              "lessThan": "937282f7d15b593d0be765fa2ced164130ec87f7",
              "status": "affected",
              "version": "c451d34ae14201c2bb40652bf74072a79ff82f7d",
              "versionType": "git"
            }
          ]
        },
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs/ea.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "lessThan": "7.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "7.1",
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - NTFS registers NFS export ops and is commonly served via nfsd/ksmbd; remote SMB/NFS OPEN, GETXATTR, or LISTXATTRS on an exported NTFS volume reaches ntfs_ea_lookup/ntfs_listxattr on the server without local login.\nAC:L - Triggering is deterministic once a crafted $EA/$EA_INFORMATION chain is on disk; the attacker controls next_entry_offset values to land with fewer than sizeof(struct ea_attr) bytes left, forcing the out-of-bounds read every time.\nPR:N - Exploitation needs only permission to access files on an exported NTFS share (e.g., guest/anonymous SMB or world-readable NFS); no root, CAP_SYS_ADMIN, or init-namespace privileges are required on the server to hit the parser.\nUI:N - After the NTFS volume is mounted server-side, a remote client can trigger parsing automatically via normal file open or xattr RPCs; no additional victim interaction is needed per attack.\nS:U - Impact is confined to kernel memory and privileges on the host parsing the NTFS image; it does not cross a VM, container, or IOMMU security boundary by itself.\nC:H - The bug reads struct ea_attr fields past the bounded EA query length before validation, causing an out-of-bounds kernel heap read that can disclose adjacent slab memory and feed attacker-influenced values into further EA parsing.\nI:H - Malformed next_entry_offset chaining drives additional unchecked memcmp/memcpy over attacker-chosen offsets inside the EA buffer, providing standard kernel heap grooming primitives that can be developed into arbitrary memory corruption and code execution.\nA:H - Reading EA headers beyond the allocated or mapped buffer can provoke a kernel oops or panic; even failed exploitation still corrupts kernel parsing state and can crash the affected host on repeated access."
            }
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        }
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      "providerMetadata": {
        "dateUpdated": "2026-08-18T06:56:28.443Z",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72208",
    "datePublished": "2026-08-15T05:54:04.022Z",
    "dateReserved": "2026-08-09T03:40:39.912Z",
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    "state": "PUBLISHED"
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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.

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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GHSA-6V96-8W62-7PPX

CVE-2026-72208 (GCVE-0-2026-72208)

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