Vulnerability-Lookup

GHSA-68G3-H729-P4RW

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

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

ntfs3: fix integer overflow in run_unpack() volume boundary check

The volume boundary check lcn + len > sbi->used.bitmap.nbits uses raw addition which can wrap around for large lcn and len values, bypassing the validation. Use check_add_overflow() as is already done for the adjacent prev_lcn + dlcn and vcn64 + len checks added by commit 3ac37e100385 ("ntfs3: Fix integer overflow in run_unpack()").

Found by fuzzing with a source-patched harness (LibAFL + QEMU).

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46062"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:26Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs3: fix integer overflow in run_unpack() volume boundary check\n\nThe volume boundary check `lcn + len \u003e sbi-\u003eused.bitmap.nbits` uses raw\naddition which can wrap around for large lcn and len values, bypassing\nthe validation.  Use check_add_overflow() as is already done for the\nadjacent prev_lcn + dlcn and vcn64 + len checks added by commit\n3ac37e100385 (\"ntfs3: Fix integer overflow in run_unpack()\").\n\nFound by fuzzing with a source-patched harness (LibAFL + QEMU).",
  "id": "GHSA-68g3-h729-p4rw",
  "modified": "2026-05-27T15:33:22Z",
  "published": "2026-05-27T15:33:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46062"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60dab3e2931f3d792438a77a6cb0cb731c43300b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6175d09c23bec4b60860ee9a0170308ff4b56e10"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/984a415f019536ea2d24de9010744e5302a9a948"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a954061b334ec67c79ae9d0cadd83fa521396487"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1af27cec07a9fd0847166bdb23c99e86b05bfdc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-46062 (GCVE-0-2026-46062)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:57 – Updated: 2026-05-27 12:57

Title

ntfs3: fix integer overflow in run_unpack() volume boundary check

Summary

In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix integer overflow in run_unpack() volume boundary check The volume boundary check `lcn + len > sbi->used.bitmap.nbits` uses raw addition which can wrap around for large lcn and len values, bypassing the validation. Use check_add_overflow() as is already done for the adjacent prev_lcn + dlcn and vcn64 + len checks added by commit 3ac37e100385 ("ntfs3: Fix integer overflow in run_unpack()"). Found by fuzzing with a source-patched harness (LibAFL + QEMU).

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/a954061b334ec67c7…
https://git.kernel.org/stable/c/60dab3e2931f3d792…
https://git.kernel.org/stable/c/f1af27cec07a9fd08…
https://git.kernel.org/stable/c/6175d09c23bec4b60…
https://git.kernel.org/stable/c/984a415f019536ea2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < a954061b334ec67c79ae9d0cadd83fa521396487 (git) Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 60dab3e2931f3d792438a77a6cb0cb731c43300b (git) Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < f1af27cec07a9fd0847166bdb23c99e86b05bfdc (git) Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 6175d09c23bec4b60860ee9a0170308ff4b56e10 (git) Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 984a415f019536ea2d24de9010744e5302a9a948 (git)
Linux	Linux	Affected: 5.15 Unaffected: 0 , < 5.15 (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/run.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a954061b334ec67c79ae9d0cadd83fa521396487",
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "versionType": "git"
            },
            {
              "lessThan": "60dab3e2931f3d792438a77a6cb0cb731c43300b",
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "versionType": "git"
            },
            {
              "lessThan": "f1af27cec07a9fd0847166bdb23c99e86b05bfdc",
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "versionType": "git"
            },
            {
              "lessThan": "6175d09c23bec4b60860ee9a0170308ff4b56e10",
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "versionType": "git"
            },
            {
              "lessThan": "984a415f019536ea2d24de9010744e5302a9a948",
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/run.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.86",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.27",
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                  "vulnerable": true
                },
                {
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                {
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                }
              ],
              "negate": false,
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            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs3: fix integer overflow in run_unpack() volume boundary check\n\nThe volume boundary check `lcn + len \u003e sbi-\u003eused.bitmap.nbits` uses raw\naddition which can wrap around for large lcn and len values, bypassing\nthe validation.  Use check_add_overflow() as is already done for the\nadjacent prev_lcn + dlcn and vcn64 + len checks added by commit\n3ac37e100385 (\"ntfs3: Fix integer overflow in run_unpack()\").\n\nFound by fuzzing with a source-patched harness (LibAFL + QEMU)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:57:24.416Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a954061b334ec67c79ae9d0cadd83fa521396487"
        },
        {
          "url": "https://git.kernel.org/stable/c/60dab3e2931f3d792438a77a6cb0cb731c43300b"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1af27cec07a9fd0847166bdb23c99e86b05bfdc"
        },
        {
          "url": "https://git.kernel.org/stable/c/6175d09c23bec4b60860ee9a0170308ff4b56e10"
        },
        {
          "url": "https://git.kernel.org/stable/c/984a415f019536ea2d24de9010744e5302a9a948"
        }
      ],
      "title": "ntfs3: fix integer overflow in run_unpack() volume boundary check",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46062",
    "datePublished": "2026-05-27T12:57:24.416Z",
    "dateReserved": "2026-05-13T15:03:33.095Z",
    "dateUpdated": "2026-05-27T12:57:24.416Z",
    "state": "PUBLISHED"
  },
  "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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-68G3-H729-P4RW

CVE-2026-46062 (GCVE-0-2026-46062)

Tags

Sightings

Nomenclature