fkie_cve-2022-49312
Vulnerability from fkie_nvd
Published
2025-02-26 07:01
Modified
2025-03-17 19:54
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8712: fix a potential memory leak in r871xu_drv_init() In r871xu_drv_init(), if r8712_init_drv_sw() fails, then the memory allocated by r8712_alloc_io_queue() in r8712_usb_dvobj_init() is not properly released as there is no action will be performed by r8712_usb_dvobj_deinit(). To properly release it, we should call r8712_free_io_queue() in r8712_usb_dvobj_deinit(). Besides, in r871xu_dev_remove(), r8712_usb_dvobj_deinit() will be called by r871x_dev_unload() under condition `padapter->bup` and r8712_free_io_queue() is called by r8712_free_drv_sw(). However, r8712_usb_dvobj_deinit() does not rely on `padapter->bup` and calling r8712_free_io_queue() in r8712_free_drv_sw() is negative for better understading the code. So I move r8712_usb_dvobj_deinit() into r871xu_dev_remove(), and remove r8712_free_io_queue() from r8712_free_drv_sw().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/205e039fead72e87ad2838f5e649a4c4834f648bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a89a92efc342dd7c44b6056da87debc598f9c73Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7288ff561de650d4139fab80e9cb0da9b5b32434Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8eb42d6d10f8fe509117859defddf9e72b4fa4d0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a2882b8baad068d21c99fb2ab5a85a2bdbd5b834Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "729BFE7A-6A28-47AD-BDEF-256C3C9BC15F",
              "versionEndExcluding": "5.10.122",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FC042EE3-4864-4325-BE0B-4BCDBF11AA61",
              "versionEndExcluding": "5.15.47",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "5.17.15",
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "5.18.4",
              "versionStartIncluding": "5.18",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8712: fix a potential memory leak in r871xu_drv_init()\n\nIn r871xu_drv_init(), if r8712_init_drv_sw() fails, then the memory\nallocated by r8712_alloc_io_queue() in r8712_usb_dvobj_init() is not\nproperly released as there is no action will be performed by\nr8712_usb_dvobj_deinit().\nTo properly release it, we should call r8712_free_io_queue() in\nr8712_usb_dvobj_deinit().\n\nBesides, in r871xu_dev_remove(), r8712_usb_dvobj_deinit() will be called\nby r871x_dev_unload() under condition `padapter-\u003ebup` and\nr8712_free_io_queue() is called by r8712_free_drv_sw().\nHowever, r8712_usb_dvobj_deinit() does not rely on `padapter-\u003ebup` and\ncalling r8712_free_io_queue() in r8712_free_drv_sw() is negative for\nbetter understading the code.\nSo I move r8712_usb_dvobj_deinit() into r871xu_dev_remove(), and remove\nr8712_free_io_queue() from r8712_free_drv_sw()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: staging: rtl8712: corrige una posible p\u00e9rdida de memoria en r871xu_drv_init() En r871xu_drv_init(), si r8712_init_drv_sw() falla, entonces la memoria asignada por r8712_alloc_io_queue() en r8712_usb_dvobj_init() no se libera correctamente ya que r8712_usb_dvobj_deinit() no realizar\u00e1 ninguna acci\u00f3n. Para liberarla correctamente, debemos llamar a r8712_free_io_queue() en r8712_usb_dvobj_deinit(). Adem\u00e1s, en r871xu_dev_remove(), r8712_usb_dvobj_deinit() ser\u00e1 llamado por r871x_dev_unload() bajo la condici\u00f3n `padapter-\u0026gt;bup` y r8712_free_io_queue() ser\u00e1 llamado por r8712_free_drv_sw(). Sin embargo, r8712_usb_dvobj_deinit() no depende de `padapter-\u0026gt;bup` y llamar a r8712_free_io_queue() en r8712_free_drv_sw() es negativo para una mejor comprensi\u00f3n del c\u00f3digo. Entonces muevo r8712_usb_dvobj_deinit() a r871xu_dev_remove() y elimino r8712_free_io_queue() de r8712_free_drv_sw()."
    }
  ],
  "id": "CVE-2022-49312",
  "lastModified": "2025-03-17T19:54:00.450",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-02-26T07:01:07.997",
  "references": [
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      "tags": [
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    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "url": "https://git.kernel.org/stable/c/8eb42d6d10f8fe509117859defddf9e72b4fa4d0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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