ghsa-p2cv-98qj-r2qc
Vulnerability from github
Published
2025-03-27 18:31
Modified
2025-04-14 21:32
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

Bluetooth: Fix a buffer overflow in mgmt_mesh_add()

Smatch Warning: net/bluetooth/mgmt_util.c:375 mgmt_mesh_add() error: __memcpy() 'mesh_tx->param' too small (48 vs 50)

Analysis:

'mesh_tx->param' is array of size 48. This is the destination. u8 param[sizeof(struct mgmt_cp_mesh_send) + 29]; // 19 + 29 = 48.

But in the caller 'mesh_send' we reject only when len > 50. len > (MGMT_MESH_SEND_SIZE + 31) // 19 + 31 = 50.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49754"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-27T17:15:40Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix a buffer overflow in mgmt_mesh_add()\n\nSmatch Warning:\nnet/bluetooth/mgmt_util.c:375 mgmt_mesh_add() error: __memcpy()\n\u0027mesh_tx-\u003eparam\u0027 too small (48 vs 50)\n\nAnalysis:\n\n\u0027mesh_tx-\u003eparam\u0027 is array of size 48. This is the destination.\nu8 param[sizeof(struct mgmt_cp_mesh_send) + 29]; // 19 + 29 = 48.\n\nBut in the caller \u0027mesh_send\u0027 we reject only when len \u003e 50.\nlen \u003e (MGMT_MESH_SEND_SIZE + 31) // 19 + 31 = 50.",
  "id": "GHSA-p2cv-98qj-r2qc",
  "modified": "2025-04-14T21:32:23Z",
  "published": "2025-03-27T18:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49754"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2185e0fdbb2137f22a9dd9fcbf6481400d56299b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed818fd8c531abf561b379995ee7cc4c68029464"
    }
  ],
  "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"
    }
  ]
}


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