github - ghsa-8mm6-9q78-9fr6

GHSA-8MM6-9Q78-9FR6

Vulnerability from github – Published: 2025-12-24 12:30 – Updated: 2025-12-24 12:30

Details

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

ntfs3: fix uninit memory after failed mi_read in mi_format_new

Fix a KMSAN un-init bug found by syzkaller.

ntfs_get_bh() expects a buffer from sb_getblk(), that buffer may not be uptodate. We do not bring the buffer uptodate before setting it as uptodate. If the buffer were to not be uptodate, it could mean adding a buffer with un-init data to the mi record. Attempting to load that record will trigger KMSAN.

Avoid this by setting the buffer as uptodate, if it’s not already, by overwriting it.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68728"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T11:16:02Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs3: fix uninit memory after failed mi_read in mi_format_new\n\nFix a KMSAN un-init bug found by syzkaller.\n\nntfs_get_bh() expects a buffer from sb_getblk(), that buffer may not be\nuptodate. We do not bring the buffer uptodate before setting it as\nuptodate. If the buffer were to not be uptodate, it could mean adding a\nbuffer with un-init data to the mi record. Attempting to load that record\nwill trigger KMSAN.\n\nAvoid this by setting the buffer as uptodate, if it\u2019s not already, by\noverwriting it.",
  "id": "GHSA-8mm6-9q78-9fr6",
  "modified": "2025-12-24T12:30:30Z",
  "published": "2025-12-24T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68728"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46f2a881e5a7311d41551edb3915e4d4e8802341"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/73e6b9dacf72a1e7a4265eacca46f8f33e0997d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ce8f2028dfccb2161b905cf8ab85cdd9e93909c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81ffe9a265df3e41534726b852ab08792e3d374d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68728 (GCVE-0-2025-68728)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:33 – Updated: 2025-12-24 10:33

Title

ntfs3: fix uninit memory after failed mi_read in mi_format_new

Summary

In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix uninit memory after failed mi_read in mi_format_new Fix a KMSAN un-init bug found by syzkaller. ntfs_get_bh() expects a buffer from sb_getblk(), that buffer may not be uptodate. We do not bring the buffer uptodate before setting it as uptodate. If the buffer were to not be uptodate, it could mean adding a buffer with un-init data to the mi record. Attempting to load that record will trigger KMSAN. Avoid this by setting the buffer as uptodate, if it’s not already, by overwriting it.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/7ce8f2028dfccb216…
	https://git.kernel.org/stable/c/46f2a881e5a7311d4…
	https://git.kernel.org/stable/c/81ffe9a265df3e415…
	https://git.kernel.org/stable/c/73e6b9dacf72a1e7a…

Impacted products

Vendor

Product

Version

Linux

Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 7ce8f2028dfccb2161b905cf8ab85cdd9e93909c (git)
Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 46f2a881e5a7311d41551edb3915e4d4e8802341 (git)
Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 81ffe9a265df3e41534726b852ab08792e3d374d (git)
Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 73e6b9dacf72a1e7a4265eacca46f8f33e0997d6 (git)

Linux

Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.12.63 , ≤ 6.12.* (semver)
Unaffected: 6.17.13 , ≤ 6.17.* (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)

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{
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/fsntfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "46f2a881e5a7311d41551edb3915e4d4e8802341",
              "status": "affected",
              "version": "4342306f0f0d5ff4315a204d315c1b51b914fca5",
              "versionType": "git"
            },
            {
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        },
        {
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          ],
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          "versions": [
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            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
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            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
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              "version": "6.18.2",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "versionEndExcluding": "6.12.63",
                  "versionStartIncluding": "5.15",
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                },
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs3: fix uninit memory after failed mi_read in mi_format_new\n\nFix a KMSAN un-init bug found by syzkaller.\n\nntfs_get_bh() expects a buffer from sb_getblk(), that buffer may not be\nuptodate. We do not bring the buffer uptodate before setting it as\nuptodate. If the buffer were to not be uptodate, it could mean adding a\nbuffer with un-init data to the mi record. Attempting to load that record\nwill trigger KMSAN.\n\nAvoid this by setting the buffer as uptodate, if it\u2019s not already, by\noverwriting it."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T10:33:11.847Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "datePublished": "2025-12-24T10:33:11.847Z",
    "dateReserved": "2025-12-24T10:30:51.028Z",
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    "state": "PUBLISHED"
  },
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}

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-8MM6-9Q78-9FR6

CVE-2025-68728 (GCVE-0-2025-68728)

Tags

Sightings

Nomenclature