Vulnerability-Lookup

FKIE_CVE-2025-39942

Vulnerability from fkie_nvd - Published: 2025-10-04 08:15 - Updated: 2026-01-27 19:53

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size This is inspired by the check for data_offset + data_length.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/196a3a7676d726ee67621ea2bf3b7815ac2685b4	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9644798294c7287e65a7b26e35aa6d2ce3345bcc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c64b915bb3d9339adcae5db4be2c35ffbef5e615	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d3cb3f209d35c44b7ee74f77ed27ebb28995b9ce	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e1868ba37fd27c6a68e31565402b154beaa65df0	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EA7B2923-61F5-47B1-A3A1-2721B0938725",
              "versionEndExcluding": "6.1.154",
              "versionStartIncluding": "5.15.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A7E8EAEE-7731-4996-9578-696255D61EA2",
              "versionEndExcluding": "6.6.108",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "40D9C0D1-0F32-4A2B-9840-1072F5497540",
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            },
            {
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              "matchCriteriaId": "948A6B8D-1B72-4945-8680-354E53BE1C80",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "47E4C5C0-079F-4838-971B-8C503D48FCC2",
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            {
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size\n\nThis is inspired by the check for data_offset + data_length."
    }
  ],
  "id": "CVE-2025-39942",
  "lastModified": "2026-01-27T19:53:27.920",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-10-04T08:15:47.230",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/196a3a7676d726ee67621ea2bf3b7815ac2685b4"
    },
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    },
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    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-39942 (GCVE-0-2025-39942)

Vulnerability from cvelistv5 – Published: 2025-10-04 07:31 – Updated: 2025-10-04 07:31

Title

ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/196a3a7676d726ee6…
	https://git.kernel.org/stable/c/d3cb3f209d35c44b7…
	https://git.kernel.org/stable/c/9644798294c7287e6…
	https://git.kernel.org/stable/c/c64b915bb3d9339ad…
	https://git.kernel.org/stable/c/e1868ba37fd27c6a6…

Impacted products

Vendor

Product

Version

Linux

Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < 196a3a7676d726ee67621ea2bf3b7815ac2685b4 (git)
Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < d3cb3f209d35c44b7ee74f77ed27ebb28995b9ce (git)
Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < 9644798294c7287e65a7b26e35aa6d2ce3345bcc (git)
Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < c64b915bb3d9339adcae5db4be2c35ffbef5e615 (git)
Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < e1868ba37fd27c6a68e31565402b154beaa65df0 (git)

Linux

Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.1.154 , ≤ 6.1.* (semver)
Unaffected: 6.6.108 , ≤ 6.6.* (semver)
Unaffected: 6.12.49 , ≤ 6.12.* (semver)
Unaffected: 6.16.9 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/transport_rdma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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        },
        {
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          "programFiles": [
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          ],
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            },
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            },
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      ],
      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "title": "ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size",
      "x_generator": {
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    "dateReserved": "2025-04-16T07:20:57.148Z",
    "dateUpdated": "2025-10-04T07:31:04.810Z",
    "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

FKIE_CVE-2025-39942

CVE-2025-39942 (GCVE-0-2025-39942)

Tags

Sightings

Nomenclature