Vulnerability-Lookup

FKIE_CVE-2025-39943

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

Severity ?

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

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5282491fc49d5614ac6ddcd012e5743eecb6a67c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/529b121b00a6ee3c88fb3c01b443b2b81f686d48	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/773fddf976d282ef059c36c575ddb81567acd6bc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8be498fcbd5b07272f560b45981d4b9e5a2ad885	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bdaab5c6538e250a9654127e688ecbbeb6f771d5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eb0378dde086363046ed3d7db7f126fc3f76fd70	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
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

{
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    }
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  "lastModified": "2026-01-27T19:53:07.183",
  "metrics": {
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
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CVE-2025-39943 (GCVE-0-2025-39943)

Vulnerability from cvelistv5 – Published: 2025-10-04 07:31 – Updated: 2025-10-04 07:37

Title

ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/773fddf976d282ef0…
	https://git.kernel.org/stable/c/bdaab5c6538e250a9…
	https://git.kernel.org/stable/c/eb0378dde08636304…
	https://git.kernel.org/stable/c/8be498fcbd5b07272…
	https://git.kernel.org/stable/c/529b121b00a6ee3c8…
	https://git.kernel.org/stable/c/5282491fc49d5614a…

Impacted products

Vendor

Product

Version

Linux

Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < 773fddf976d282ef059c36c575ddb81567acd6bc (git)
Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < bdaab5c6538e250a9654127e688ecbbeb6f771d5 (git)
Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < eb0378dde086363046ed3d7db7f126fc3f76fd70 (git)
Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < 8be498fcbd5b07272f560b45981d4b9e5a2ad885 (git)
Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < 529b121b00a6ee3c88fb3c01b443b2b81f686d48 (git)
Affected: 2ea086e35c3d726a3bacd0a971c1f02a50e98206 , < 5282491fc49d5614ac6ddcd012e5743eecb6a67c (git)

Linux

Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.194 , ≤ 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

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          "programFiles": [
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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-2025-39943

CVE-2025-39943 (GCVE-0-2025-39943)

Tags

Sightings

Nomenclature