Vulnerability-Lookup

GHSA-MGMC-76VJ-QF3J

Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-01-19 15:30

Details

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

hfsplus: Verify inode mode when loading from disk

syzbot is reporting that S_IFMT bits of inode->i_mode can become bogus when the S_IFMT bits of the 16bits "mode" field loaded from disk are corrupted.

According to [1], the permissions field was treated as reserved in Mac OS 8 and 9. According to [2], the reserved field was explicitly initialized with 0, and that field must remain 0 as long as reserved. Therefore, when the "mode" field is not 0 (i.e. no longer reserved), the file must be S_IFDIR if dir == 1, and the file must be one of S_IFREG/S_IFLNK/S_IFCHR/ S_IFBLK/S_IFIFO/S_IFSOCK if dir == 0.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68767"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-13T16:15:56Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhfsplus: Verify inode mode when loading from disk\n\nsyzbot is reporting that S_IFMT bits of inode-\u003ei_mode can become bogus when\nthe S_IFMT bits of the 16bits \"mode\" field loaded from disk are corrupted.\n\nAccording to [1], the permissions field was treated as reserved in Mac OS\n8 and 9. According to [2], the reserved field was explicitly initialized\nwith 0, and that field must remain 0 as long as reserved. Therefore, when\nthe \"mode\" field is not 0 (i.e. no longer reserved), the file must be\nS_IFDIR if dir == 1, and the file must be one of S_IFREG/S_IFLNK/S_IFCHR/\nS_IFBLK/S_IFIFO/S_IFSOCK if dir == 0.",
  "id": "GHSA-mgmc-76vj-qf3j",
  "modified": "2026-01-19T15:30:35Z",
  "published": "2026-01-13T18:31:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68767"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/001f44982587ad462b3002ee40c75e8df67d597d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/005d4b0d33f6b4a23d382b7930f7a96b95b01f39"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05ec9af3cc430683c97f76027e1c55ac6fd25c59"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f768724aabd5b321c5b8f15acdca11e4781cf32"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91f114bffa36ce56d0e1f60a0a44fc09baaefc79"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d92333c7a35856e419500e7eed72dac1afa404a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/edfb2e602b5ba5ca6bf31cbac20b366efb72b156"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68767 (GCVE-0-2025-68767)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:28 – Updated: 2026-01-19 12:18

Title

hfsplus: Verify inode mode when loading from disk

Summary

In the Linux kernel, the following vulnerability has been resolved: hfsplus: Verify inode mode when loading from disk syzbot is reporting that S_IFMT bits of inode->i_mode can become bogus when the S_IFMT bits of the 16bits "mode" field loaded from disk are corrupted. According to [1], the permissions field was treated as reserved in Mac OS 8 and 9. According to [2], the reserved field was explicitly initialized with 0, and that field must remain 0 as long as reserved. Therefore, when the "mode" field is not 0 (i.e. no longer reserved), the file must be S_IFDIR if dir == 1, and the file must be one of S_IFREG/S_IFLNK/S_IFCHR/ S_IFBLK/S_IFIFO/S_IFSOCK if dir == 0.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/6f768724aabd5b321…
	https://git.kernel.org/stable/c/d92333c7a35856e41…
	https://git.kernel.org/stable/c/001f44982587ad462…
	https://git.kernel.org/stable/c/05ec9af3cc430683c…
	https://git.kernel.org/stable/c/edfb2e602b5ba5ca6…
	https://git.kernel.org/stable/c/91f114bffa36ce56d…
	https://git.kernel.org/stable/c/005d4b0d33f6b4a23…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6f768724aabd5b321c5b8f15acdca11e4781cf32 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d92333c7a35856e419500e7eed72dac1afa404a5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 001f44982587ad462b3002ee40c75e8df67d597d (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 05ec9af3cc430683c97f76027e1c55ac6fd25c59 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < edfb2e602b5ba5ca6bf31cbac20b366efb72b156 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 91f114bffa36ce56d0e1f60a0a44fc09baaefc79 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 005d4b0d33f6b4a23d382b7930f7a96b95b01f39 (git)

Linux

Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/hfsplus/inode.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
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              "versionType": "git"
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            {
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              "status": "affected",
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              "versionType": "git"
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            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.248",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.248",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.198",
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                {
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhfsplus: Verify inode mode when loading from disk\n\nsyzbot is reporting that S_IFMT bits of inode-\u003ei_mode can become bogus when\nthe S_IFMT bits of the 16bits \"mode\" field loaded from disk are corrupted.\n\nAccording to [1], the permissions field was treated as reserved in Mac OS\n8 and 9. According to [2], the reserved field was explicitly initialized\nwith 0, and that field must remain 0 as long as reserved. Therefore, when\nthe \"mode\" field is not 0 (i.e. no longer reserved), the file must be\nS_IFDIR if dir == 1, and the file must be one of S_IFREG/S_IFLNK/S_IFCHR/\nS_IFBLK/S_IFIFO/S_IFSOCK if dir == 0."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-19T12:18:50.036Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/6f768724aabd5b321c5b8f15acdca11e4781cf32"
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        {
          "url": "https://git.kernel.org/stable/c/001f44982587ad462b3002ee40c75e8df67d597d"
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        {
          "url": "https://git.kernel.org/stable/c/edfb2e602b5ba5ca6bf31cbac20b366efb72b156"
        },
        {
          "url": "https://git.kernel.org/stable/c/91f114bffa36ce56d0e1f60a0a44fc09baaefc79"
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        {
          "url": "https://git.kernel.org/stable/c/005d4b0d33f6b4a23d382b7930f7a96b95b01f39"
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      ],
      "title": "hfsplus: Verify inode mode when loading from disk",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68767",
    "datePublished": "2026-01-13T15:28:46.382Z",
    "dateReserved": "2025-12-24T10:30:51.034Z",
    "dateUpdated": "2026-01-19T12:18:50.036Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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-MGMC-76VJ-QF3J

CVE-2025-68767 (GCVE-0-2025-68767)

Tags

Sightings

Nomenclature