CVE-2025-40099 (GCVE-0-2025-40099)

Vulnerability from cvelistv5 – Published: 2025-10-30 09:48 – Updated: 2025-12-01 06:18
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: cifs: parse_dfs_referrals: prevent oob on malformed input Malicious SMB server can send invalid reply to FSCTL_DFS_GET_REFERRALS - reply smaller than sizeof(struct get_dfs_referral_rsp) - reply with number of referrals smaller than NumberOfReferrals in the header Processing of such replies will cause oob. Return -EINVAL error on such replies to prevent oob-s.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cfacc7441f760e4a73cc71b6ff1635261d534657 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 15c73964da9df994302f579ed14ee5fdbce7a332 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < bb0f2e66e1ac043a5b238f5bcab4f26f3c317039 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6447b0e355562a1ff748c4a2ffb89aae7e84d2c9 (git)
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    Linux Linux Unaffected: 6.1.158 , ≤ 6.1.* (semver)
Unaffected: 6.6.114 , ≤ 6.6.* (semver)
Unaffected: 6.12.55 , ≤ 6.12.* (semver)
Unaffected: 6.17.5 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
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        {
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          "product": "Linux",
          "programFiles": [
            "fs/smb/client/misc.c"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: parse_dfs_referrals: prevent oob on malformed input\n\nMalicious SMB server can send invalid reply to FSCTL_DFS_GET_REFERRALS\n\n- reply smaller than sizeof(struct get_dfs_referral_rsp)\n- reply with number of referrals smaller than NumberOfReferrals in the\nheader\n\nProcessing of such replies will cause oob.\n\nReturn -EINVAL error on such replies to prevent oob-s."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-01T06:18:00.438Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/6447b0e355562a1ff748c4a2ffb89aae7e84d2c9"
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      "title": "cifs: parse_dfs_referrals: prevent oob on malformed input",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40099",
    "datePublished": "2025-10-30T09:48:05.859Z",
    "dateReserved": "2025-04-16T07:20:57.164Z",
    "dateUpdated": "2025-12-01T06:18:00.438Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
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  }
}


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Sightings

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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.