Vulnerability-Lookup

FKIE_CVE-2025-39864

Vulnerability from fkie_nvd - Published: 2025-09-19 16:15 - Updated: 2026-07-30 06:23

Severity

8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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: wifi: cfg80211: fix use-after-free in cmp_bss() Following bss_free() quirk introduced in commit 776b3580178f ("cfg80211: track hidden SSID networks properly"), adjust cfg80211_update_known_bss() to free the last beacon frame elements only if they're not shared via the corresponding 'hidden_beacon_bss' pointer.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/26e84445f02ce6b2fe5f3e0e28ff7add77f35e08	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5b7ae04969f822283a95c866967e42b4d75e0eef	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6854476d9e1aeaaf05ebc98d610061c2075db07d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/912c4b66bef713a20775cfbf3b5e9bd71525c716	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a8bb681e879ca3c9f722aa08d3d7ae41c42a8807	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a97a9791e455bb0cd5e7a38b5abcb05523d4e21c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b7d08929178c16398278613df07ad65cf63cce9d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ff040562c10a540b8d851f7f4145fa112977f853	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	Mailing List, Third Party Advisory
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-032379.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-089022.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17
debian	debian_linux	11.0

JSON

To clipboard

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  "cveTags": [],
  "descriptions": [
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    }
  ],
  "id": "CVE-2025-39864",
  "lastModified": "2026-07-30T06:23:52.250",
  "metrics": {
    "cvssMetricV31": [
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          "attackVector": "ADJACENT_NETWORK",
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          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
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            {
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          "role": "CISA Coordinator",
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  "published": "2025-09-19T16:15:45.420",
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    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-39864 (GCVE-0-2025-39864)

Vulnerability from cvelistv5 – Published: 2025-09-19 15:26 – Updated: 2026-08-05 12:05

Title

wifi: cfg80211: fix use-after-free in cmp_bss()

Summary

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-10 20:40 UTC

Assigner

Linux mitre root

References

12 references

URL	Tags
https://git.kernel.org/stable/c/a8bb681e879ca3c9f…
https://git.kernel.org/stable/c/a97a9791e455bb0cd…
https://git.kernel.org/stable/c/ff040562c10a540b8…
https://git.kernel.org/stable/c/6854476d9e1aeaaf0…
https://git.kernel.org/stable/c/b7d08929178c16398…
https://git.kernel.org/stable/c/5b7ae04969f822283…
https://git.kernel.org/stable/c/912c4b66bef713a20…
https://git.kernel.org/stable/c/26e84445f02ce6b2f…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

19 products

Vendor	Product	Version
Linux	Linux	Affected: 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 , < a8bb681e879ca3c9f722aa08d3d7ae41c42a8807 (git) Affected: 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 , < a97a9791e455bb0cd5e7a38b5abcb05523d4e21c (git) Affected: 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 , < ff040562c10a540b8d851f7f4145fa112977f853 (git) Affected: 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 , < 6854476d9e1aeaaf05ebc98d610061c2075db07d (git) Affected: 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 , < b7d08929178c16398278613df07ad65cf63cce9d (git) Affected: 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 , < 5b7ae04969f822283a95c866967e42b4d75e0eef (git) Affected: 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 , < 912c4b66bef713a20775cfbf3b5e9bd71525c716 (git) Affected: 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 , < 26e84445f02ce6b2fe5f3e0e28ff7add77f35e08 (git)
Linux	Linux	Affected: 5.4 Unaffected: 0 , < 5.4 (semver) Unaffected: 5.4.299 , ≤ 5.4.* (semver) Unaffected: 5.10.243 , ≤ 5.10.* (semver) Unaffected: 5.15.192 , ≤ 5.15.* (semver) Unaffected: 6.1.151 , ≤ 6.1.* (semver) Unaffected: 6.6.105 , ≤ 6.6.* (semver) Unaffected: 6.12.46 , ≤ 6.12.* (semver) Unaffected: 6.16.6 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix)
Siemens	RUGGEDCOM RST2428P	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XCH328	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XCM324	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XCM328	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XCM332	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRH334 (24 V DC, 8xFO, CC)	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRM334 (230 V AC, 12xFO)	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRM334 (230 V AC, 8xFO)	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRM334 (24 V DC, 12xFO)	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRM334 (24 V DC, 8xFO)	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRM334 (2x230 V AC, 12xFO)	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRM334 (2x230 V AC, 8xFO)	Affected: 0 , < V3.3 (custom)
Siemens	SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)	Affected: 0 , < V3.3 (custom)
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

Show details on NVD website

JSON

To clipboard

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                  {
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            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.243",
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            {
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            {
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              "lessThanOrEqual": "6.12.*",
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                  "versionStartIncluding": "5.4",
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        }
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        }
      ],
      "title": "wifi: cfg80211: fix use-after-free in cmp_bss()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39864",
    "datePublished": "2025-09-19T15:26:33.787Z",
    "dateReserved": "2025-04-16T07:20:57.143Z",
    "dateUpdated": "2026-08-05T12:05:44.524Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.