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

Vulnerability from cvelistv5 – Published: 2025-12-24 10:33 – Updated: 2025-12-24 10:33
VLAI?
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
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 7ce8f2028dfccb2161b905cf8ab85cdd9e93909c (git)
Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 46f2a881e5a7311d41551edb3915e4d4e8802341 (git)
Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 81ffe9a265df3e41534726b852ab08792e3d374d (git)
Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 73e6b9dacf72a1e7a4265eacca46f8f33e0997d6 (git)
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    Linux 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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          "programFiles": [
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      "descriptions": [
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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."
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      "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",
    "dateUpdated": "2025-12-24T10:33:11.847Z",
    "state": "PUBLISHED"
  },
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  }
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  • 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.
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  • 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.



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