Vulnerability-Lookup

FKIE_CVE-2025-68817

Vulnerability from fkie_nvd - Published: 2026-01-13 16:16 - Updated: 2026-02-26 18:43

Severity ?

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

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency Under high concurrency, A tree-connection object (tcon) is freed on a disconnect path while another path still holds a reference and later executes *_put()/write on it.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/063cbbc6f595ea36ad146e1b7d2af820894beb21	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/21a3d01fc6db5129f81edb0ab7cb94fd758bcbea	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/446beed646b2e426dd53d27358365f8678e1dd01	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b39a1833cc4a2755b02603eec3a71a85e9dff926	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d092de8a26c952379ded8e6b0bda31d89befac1a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d64977495e44855f2b28d8ce56107c963a7a50e4	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.6
linux	linux_kernel	6.6
linux	linux_kernel	6.6
linux	linux_kernel	6.6

JSON

To clipboard

{
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    }
  ],
  "id": "CVE-2025-68817",
  "lastModified": "2026-02-26T18:43:18.717",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2026-01-13T16:16:03.983",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-68817 (GCVE-0-2025-68817)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-02-09 08:34

Title

ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/446beed646b2e426d…
	https://git.kernel.org/stable/c/d092de8a26c952379…
	https://git.kernel.org/stable/c/d64977495e44855f2…
	https://git.kernel.org/stable/c/21a3d01fc6db5129f…
	https://git.kernel.org/stable/c/063cbbc6f595ea36a…
	https://git.kernel.org/stable/c/b39a1833cc4a2755b…

Impacted products

Vendor

Product

Version

Linux

Affected: dd45db4d9bbc8f122a9b4db5ce94ae29fcf03d3c , < 446beed646b2e426dd53d27358365f8678e1dd01 (git)
Affected: 7b58ee8d0b91359554cf219cd4f33872ea2afd66 , < d092de8a26c952379ded8e6b0bda31d89befac1a (git)
Affected: 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e , < d64977495e44855f2b28d8ce56107c963a7a50e4 (git)
Affected: 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e , < 21a3d01fc6db5129f81edb0ab7cb94fd758bcbea (git)
Affected: 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e , < 063cbbc6f595ea36ad146e1b7d2af820894beb21 (git)
Affected: 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e , < b39a1833cc4a2755b02603eec3a71a85e9dff926 (git)

Linux

Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/mgmt/tree_connect.c",
            "fs/smb/server/mgmt/tree_connect.h",
            "fs/smb/server/smb2pdu.c"
          ],
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          "vendor": "Linux",
          "versions": [
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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-2025-68817

CVE-2025-68817 (GCVE-0-2025-68817)

Tags

Sightings

Nomenclature