Vulnerability-Lookup

FKIE_CVE-2024-39468

Vulnerability from fkie_nvd - Published: 2024-06-25 15:15 - Updated: 2026-08-04 11:18

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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: smb: client: fix deadlock in smb2_find_smb_tcon() Unlock cifs_tcp_ses_lock before calling cifs_put_smb_ses() to avoid such deadlock.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/02c418774f76a0a36a6195c9dbf8971eb4130a15	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/21f5dd36e655d25a7b45b61c1e537198b671f720	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/225de871ddf994f69a57f035709cad9c0ab8615a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8d0f5f1ccf675454a833a573c53830a49b7d1a47	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b055752675cd1d1db4ac9c2750db3dc3e89ea261	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b09b556e48968317887a11243a5331a7bc00ece5	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/02c418774f76a0a36a6195c9dbf8971eb4130a15	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/21f5dd36e655d25a7b45b61c1e537198b671f720	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/225de871ddf994f69a57f035709cad9c0ab8615a	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/8d0f5f1ccf675454a833a573c53830a49b7d1a47	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/b055752675cd1d1db4ac9c2750db3dc3e89ea261	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/b09b556e48968317887a11243a5331a7bc00ece5	Patch
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-265688.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-355557.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-613116.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.10
linux	linux_kernel	6.10

JSON

To clipboard

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      "affectedData": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2transport.c"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix deadlock in smb2_find_smb_tcon()\n\nUnlock cifs_tcp_ses_lock before calling cifs_put_smb_ses() to avoid such\ndeadlock."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: soluciona el punto muerto en smb2_find_smb_tcon() Desbloquea cifs_tcp_ses_lock antes de llamar a cifs_put_smb_ses() para evitar dicho punto muerto."
    }
  ],
  "id": "CVE-2024-39468",
  "lastModified": "2026-08-04T11:18:56.463",
  "metrics": {
    "cvssMetricV31": [
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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          "confidentialityImpact": "NONE",
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          "privilegesRequired": "LOW",
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          "userInteraction": "NONE",
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        "ssvcData": {
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          "options": [
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            {
              "automatable": "no"
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            {
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T17:07:58.449670Z",
          "version": "2.0.3"
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  "weaknesses": [
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          "value": "CWE-667"
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      "source": "nvd@nist.gov",
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  ]
}

CVE-2024-39468 (GCVE-0-2024-39468)

Vulnerability from cvelistv5 – Published: 2024-06-25 14:28 – Updated: 2026-08-05 11:33

Title

smb: client: fix deadlock in smb2_find_smb_tcon()

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 17:07 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 54/100 over 6618 records in the last 180 days details

References

9 references

URL	Tags
https://git.kernel.org/stable/c/b055752675cd1d1db…
https://git.kernel.org/stable/c/21f5dd36e655d25a7…
https://git.kernel.org/stable/c/b09b556e489683178…
https://git.kernel.org/stable/c/225de871ddf994f69…
https://git.kernel.org/stable/c/8d0f5f1ccf675454a…
https://git.kernel.org/stable/c/02c418774f76a0a36…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

8 products

Vendor	Product	Version
Linux	Linux	Affected: 78ebec450ef4f0720c592638d92bad679d75d7ce , < b055752675cd1d1db4ac9c2750db3dc3e89ea261 (git) Affected: e695a9ad0305af6e8b0cbc24a54976ac2120cbb3 , < 21f5dd36e655d25a7b45b61c1e537198b671f720 (git) Affected: e695a9ad0305af6e8b0cbc24a54976ac2120cbb3 , < b09b556e48968317887a11243a5331a7bc00ece5 (git) Affected: e695a9ad0305af6e8b0cbc24a54976ac2120cbb3 , < 225de871ddf994f69a57f035709cad9c0ab8615a (git) Affected: e695a9ad0305af6e8b0cbc24a54976ac2120cbb3 , < 8d0f5f1ccf675454a833a573c53830a49b7d1a47 (git) Affected: e695a9ad0305af6e8b0cbc24a54976ac2120cbb3 , < 02c418774f76a0a36a6195c9dbf8971eb4130a15 (git)
Linux	Linux	Affected: 5.14 Unaffected: 0 , < 5.14 (semver) Unaffected: 5.15.162 , ≤ 5.15.* (semver) Unaffected: 6.1.94 , ≤ 6.1.* (semver) Unaffected: 6.6.34 , ≤ 6.6.* (semver) Unaffected: 6.9.5 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Siemens	RUGGEDCOM RST2428P	Affected: 0 , < V3.1 (custom)
Siemens	RUGGEDCOM RST2428P	Unaffected: 0 , < * (custom)
Siemens	SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family	Unaffected: 0 , < * (custom)
Siemens	SCALANCE XCM-/XRM-/XCH-/XRH-300 family	Affected: 0 , < V3.1 (custom)
Siemens	SCALANCE XCM-/XRM-/XCH-/XRH-300 family	Unaffected: 0 , < * (custom)
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < * (custom)

Show details on NVD website

JSON

To clipboard

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            "url": "https://git.kernel.org/stable/c/225de871ddf994f69a57f035709cad9c0ab8615a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8d0f5f1ccf675454a833a573c53830a49b7d1a47"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/02c418774f76a0a36a6195c9dbf8971eb4130a15"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-39468",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T17:07:58.449670Z",
                "version": "2.0.3"
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              "type": "ssvc"
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        ],
        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
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            "product": "RUGGEDCOM RST2428P",
            "vendor": "Siemens",
            "versions": [
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            "product": "RUGGEDCOM RST2428P",
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          },
          {
            "defaultStatus": "unknown",
            "product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family",
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                "status": "unaffected",
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            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
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                "status": "affected",
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        "providerMetadata": {
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          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          },
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-613116.html"
          },
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2transport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "e695a9ad0305af6e8b0cbc24a54976ac2120cbb3",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "e695a9ad0305af6e8b0cbc24a54976ac2120cbb3",
              "versionType": "git"
            },
            {
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              "status": "affected",
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        },
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.15.162",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.1.94",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.34",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.9.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.1.94",
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              "operator": "OR"
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      ],
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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          },
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              "value": "AV:N - The vulnerable lookup is driven entirely by the SessionId and TreeId fields parsed out of an SMB2 response header received over TCP/445 from the remote SMB server, so a malicious/compromised server or an on-path attacker injecting a spoofed response (this path bypasses signature verification, as cancelled mids never reach cifs_check_receive) reaches it remotely.\nAC:L - Once a CREATE mid is cancelled, the attacker deterministically triggers the self-deadlock by returning STATUS_SUCCESS with a TreeId it fully controls, and it can force the cancellation precondition at will by stalling responses until the hung process is killed; no memory-layout precision or race window is involved and attempts can be repeated indefinitely.\nPR:N - The attacking SMB server needs no account, credential, or privilege on the victim client system; it only has to respond to the client\u0027s own in-flight request on an established connection.\nUI:N - With a mount already established (fstab, autofs, or a persistent share) and the server compromised or MITM\u0027d, the malicious response is processed by the cifsd kernel thread with no victim action required; the cancellation trigger comes from ordinary kill/timeout/OOM machinery, not deliberate user interaction.\nS:U - The deadlock occurs in the kernel\u0027s CIFS client and its impact is confined to that same kernel security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:N - The bug is a pure spinlock recursion with no out-of-bounds access, uninitialized data, or freed-object reuse, so no kernel memory is disclosed.\nI:N - No memory is corrupted and no data is modified; the CPU simply spins forever on an already-held lock, giving the attacker no write primitive.\nA:H - The cifsd demux thread deadlocks with preemption disabled while permanently holding the global cifs_tcp_ses_lock, so every CIFS operation on every mount system-wide spins forever and cascades across CPUs, producing an unrecoverable hang and soft/hard lockup panic."
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    "dateReserved": "2024-06-25T14:23:23.744Z",
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}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Related by attack behaviour

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FKIE_CVE-2024-39468

CVE-2024-39468 (GCVE-0-2024-39468)

Tags

Sightings

Nomenclature

Related by attack behaviour