Vulnerability-Lookup

GHSA-9XJ3-PXMC-GV6M

Vulnerability from github – Published: 2026-05-26 18:31 – Updated: 2026-10-15 03:35

Details

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()

Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb().

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-45834"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-26T17:16:48Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()\n\nAdd the same NULL guard already present in\nl2cap_sock_resume_cb() and l2cap_sock_ready_cb().",
  "id": "GHSA-9xj3-pxmc-gv6m",
  "modified": "2026-10-15T03:35:54Z",
  "published": "2026-05-26T18:31:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45834"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c17c8832562b2aac288e89cefd0f46074f54bcb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1810e42ff6716f320c7269d5850eca48b07b7427"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b1c0da227bf63479bac9982fc8d12df9aaea0fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ff1a41a912de8517b4482e946dd951b7d80edbf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5105f3e6b2df619c635b5f6a49fac131a36c7952"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85426e97dc72f2088ba6d27e74cd58c3fbd43e31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2dcf1a61d056aef15b63c6eae9441344d624389"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c88c185ae0a1067823661b220aeea613df2c127b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-45834 (GCVE-0-2026-45834)

Vulnerability from cvelistv5 – Published: 2026-05-26 16:14 – Updated: 2026-10-15 01:19

Title

Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb() Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb().

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6666 records in the last 180 days details

References

9 references

URL	Tags
https://git.kernel.org/stable/c/1b1c0da227bf63479…
https://git.kernel.org/stable/c/85426e97dc72f2088…
https://git.kernel.org/stable/c/0c17c8832562b2aac…
https://git.kernel.org/stable/c/5105f3e6b2df619c6…
https://git.kernel.org/stable/c/c88c185ae0a106782…
https://git.kernel.org/stable/c/1810e42ff6716f320…
https://git.kernel.org/stable/c/a2dcf1a61d056aef1…
https://git.kernel.org/stable/c/2ff1a41a912de8517…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version
Linux	Linux	Affected: 89bc500e41fc5b48e0573e6b0d927fc97b8951dc , < 1b1c0da227bf63479bac9982fc8d12df9aaea0fb (git) Affected: 89bc500e41fc5b48e0573e6b0d927fc97b8951dc , < 85426e97dc72f2088ba6d27e74cd58c3fbd43e31 (git) Affected: 89bc500e41fc5b48e0573e6b0d927fc97b8951dc , < 0c17c8832562b2aac288e89cefd0f46074f54bcb (git) Affected: 89bc500e41fc5b48e0573e6b0d927fc97b8951dc , < 5105f3e6b2df619c635b5f6a49fac131a36c7952 (git) Affected: 89bc500e41fc5b48e0573e6b0d927fc97b8951dc , < c88c185ae0a1067823661b220aeea613df2c127b (git) Affected: 89bc500e41fc5b48e0573e6b0d927fc97b8951dc , < 1810e42ff6716f320c7269d5850eca48b07b7427 (git) Affected: 89bc500e41fc5b48e0573e6b0d927fc97b8951dc , < a2dcf1a61d056aef15b63c6eae9441344d624389 (git) Affected: 89bc500e41fc5b48e0573e6b0d927fc97b8951dc , < 2ff1a41a912de8517b4482e946dd951b7d80edbf (git)
Linux	Linux	Affected: 3.1 Unaffected: 0 , < 3.1 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.88 , ≤ 6.12.* (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < * (custom)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T01:19:36.750Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
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            {
              "lessThan": "85426e97dc72f2088ba6d27e74cd58c3fbd43e31",
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        },
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          "vendor": "Linux",
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            },
            {
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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            },
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              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "versionStartIncluding": "3.1",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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                {
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                {
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                  "versionStartIncluding": "3.1",
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                },
                {
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      "title": "Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()",
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    "dateUpdated": "2026-10-15T01:19:36.750Z",
    "state": "PUBLISHED"
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  "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.

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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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