fkie_cve-2022-49754
Vulnerability from fkie_nvd
Published
2025-03-27 17:15
Modified
2025-10-01 20:17
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/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: 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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2185e0fdbb2137f22a9dd9fcbf6481400d56299bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed818fd8c531abf561b379995ee7cc4c68029464Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2


To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: se corrige un desbordamiento de b\u00fafer en mgmt_mesh_add() Smatch Advertencia: net/bluetooth/mgmt_util.c:375 error de mgmt_mesh_add(): __memcpy() \u0027mesh_tx-\u0026gt;param\u0027 demasiado peque\u00f1o (48 frente a 50) An\u00e1lisis: \u0027mesh_tx-\u0026gt;param\u0027 es una matriz de tama\u00f1o 48. Este es el destino. u8 param[sizeof(struct mgmt_cp_mesh_send) + 29]; // 19 + 29 = 48. Pero en el llamador \u0027mesh_send\u0027 rechazamos solo cuando len \u0026gt; 50. len \u0026gt; (MGMT_MESH_SEND_SIZE + 31) // 19 + 31 = 50."
    }
  ],
  "id": "CVE-2022-49754",
  "lastModified": "2025-10-01T20:17:10.407",
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  "published": "2025-03-27T17:15:40.423",
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}


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