Vulnerability-Lookup

GHSA-HXJ9-5M9X-PXQ2

Vulnerability from github – Published: 2025-11-24 18:31 – Updated: 2026-07-30 06:32

Details

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

Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete

There is a BUG: KASAN: stack-out-of-bounds in set_mesh_sync due to memcpy from badly declared on-stack flexible array.

Another crash is in set_mesh_complete() due to double list_del via mgmt_pending_valid + mgmt_pending_remove.

Use DEFINE_FLEX to declare the flexible array right, and don't memcpy outside bounds.

As mgmt_pending_valid removes the cmd from list, use mgmt_pending_free, and also report status on error.

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40213"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-24T16:15:49Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete\n\nThere is a BUG: KASAN: stack-out-of-bounds in set_mesh_sync due to\nmemcpy from badly declared on-stack flexible array.\n\nAnother crash is in set_mesh_complete() due to double list_del via\nmgmt_pending_valid + mgmt_pending_remove.\n\nUse DEFINE_FLEX to declare the flexible array right, and don\u0027t memcpy\noutside bounds.\n\nAs mgmt_pending_valid removes the cmd from list, use mgmt_pending_free,\nand also report status on error.",
  "id": "GHSA-hxj9-5m9x-pxq2",
  "modified": "2026-07-30T06:32:17Z",
  "published": "2025-11-24T18:31:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40213"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c9aca1787e8395a2c59fef20e914467958969c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c19daa93d9af29f1f46251b47e1ea66bcc8d679"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e8785404de06a69d89dcdd1e9a0b6ea42dc6d327"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-40213 (GCVE-0-2025-40213)

Vulnerability from cvelistv5 – Published: 2025-11-24 15:59 – Updated: 2026-08-05 12:08

Title

Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete There is a BUG: KASAN: stack-out-of-bounds in set_mesh_sync due to memcpy from badly declared on-stack flexible array. Another crash is in set_mesh_complete() due to double list_del via mgmt_pending_valid + mgmt_pending_remove. Use DEFINE_FLEX to declare the flexible array right, and don't memcpy outside bounds. As mgmt_pending_valid removes the cmd from list, use mgmt_pending_free, and also report status on error.

Severity

7.8 (High)


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

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/5c19daa93d9af29f1…
https://git.kernel.org/stable/c/1c9aca1787e8395a2…
https://git.kernel.org/stable/c/e8785404de06a69d8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d71b98f253b079cbadc83266383f26fe7e9e103b , < 5c19daa93d9af29f1f46251b47e1ea66bcc8d679 (git) Affected: 302a1f674c00dd5581ab8e493ef44767c5101aab , < 1c9aca1787e8395a2c59fef20e914467958969c5 (git) Affected: 302a1f674c00dd5581ab8e493ef44767c5101aab , < e8785404de06a69d89dcdd1e9a0b6ea42dc6d327 (git) Affected: 0b60eb04b8524e1b4b3f07fea0d16fda9a677d9a (git) Affected: 87a1f16f07c6c43771754075e08f45b41d237421 (git) Affected: 6.6.140 , < 6.7 (semver) Affected: 6.16.10 , < 6.17 (semver)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.17.8 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/bluetooth/mgmt.h",
            "net/bluetooth/mgmt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5c19daa93d9af29f1f46251b47e1ea66bcc8d679",
              "status": "affected",
              "version": "d71b98f253b079cbadc83266383f26fe7e9e103b",
              "versionType": "git"
            },
            {
              "lessThan": "1c9aca1787e8395a2c59fef20e914467958969c5",
              "status": "affected",
              "version": "302a1f674c00dd5581ab8e493ef44767c5101aab",
              "versionType": "git"
            },
            {
              "lessThan": "e8785404de06a69d89dcdd1e9a0b6ea42dc6d327",
              "status": "affected",
              "version": "302a1f674c00dd5581ab8e493ef44767c5101aab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0b60eb04b8524e1b4b3f07fea0d16fda9a677d9a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "87a1f16f07c6c43771754075e08f45b41d237421",
              "versionType": "git"
            },
            {
              "lessThan": "6.7",
              "status": "affected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThan": "6.17",
              "status": "affected",
              "version": "6.16.10",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/bluetooth/mgmt.h",
            "net/bluetooth/mgmt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.8",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.6.140",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.16.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete\n\nThere is a BUG: KASAN: stack-out-of-bounds in set_mesh_sync due to\nmemcpy from badly declared on-stack flexible array.\n\nAnother crash is in set_mesh_complete() due to double list_del via\nmgmt_pending_valid + mgmt_pending_remove.\n\nUse DEFINE_FLEX to declare the flexible array right, and don\u0027t memcpy\noutside bounds.\n\nAs mgmt_pending_valid removes the cmd from list, use mgmt_pending_free,\nand also report status on error."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is triggered entirely through a local AF_BLUETOOTH HCI control (mgmt) socket by sending a MGMT_OP_SET_MESH_RECEIVER command via sendmsg(); no over-the-air interaction is needed to reach or corrupt memory.\nAC:L - Both defects fire deterministically \u2014 any SET_MESH_RECEIVER with param_len \u003e 6 causes the stack out-of-bounds read, and every successful completion hits the double list_del; the optional sock use-after-free variant is a race whose both sides (issuing the command and closing the mgmt fd) are fully attacker-controlled.\nPR:L - Requires a trusted mgmt socket (CAP_NET_ADMIN), the privilege level held by the ordinary non-root Bluetooth daemon on Linux desktops and by Android\u0027s sandboxed bluetooth process, so a compromised Bluetooth stack \u2014 itself remotely attackable \u2014 reaches this with low effective privilege.\nUI:N - The attacker issues the management command directly and no victim action, configuration change, or interaction is required.\nS:U - The out-of-bounds access, list corruption and freed-socket reuse all occur within the kernel\u0027s own security authority with no crossing of a VM, IOMMU or sandbox boundary.\nC:H - Up to 16 bytes of adjacent kernel stack are copied into the persistent hdev-\u003emesh_ad_types filter and can be read back byte-by-byte through the mesh_device_found() advertisement-forwarding oracle, and the use-after-free on the released sock additionally exposes reclaimed slab contents.\nI:H - The second list_del writes through LIST_POISON pointers, and the premature sock_put lets mgmt_cmd_complete() write into a freed, sprayable hci_pinfo/sock object (sk_receive_queue, sk_data_ready), which is a control-flow hijack primitive rather than a bounded modification.\nA:H - The double list_del reliably oopses on poison-pointer dereference (or WARNs under CONFIG_DEBUG_LIST), the stack out-of-bounds read is a hard KASAN BUG, and the error path leaks the cmd, its parameters and a socket reference on every failure."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:08:38.482Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5c19daa93d9af29f1f46251b47e1ea66bcc8d679"
        },
        {
          "url": "https://git.kernel.org/stable/c/1c9aca1787e8395a2c59fef20e914467958969c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/e8785404de06a69d89dcdd1e9a0b6ea42dc6d327"
        }
      ],
      "title": "Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40213",
    "datePublished": "2025-11-24T15:59:44.000Z",
    "dateReserved": "2025-04-16T07:20:57.179Z",
    "dateUpdated": "2026-08-05T12:08:38.482Z",
    "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.

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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GHSA-HXJ9-5M9X-PXQ2

CVE-2025-40213 (GCVE-0-2025-40213)

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