fkie_cve-2024-44971
Vulnerability from fkie_nvd
Published
2024-09-04 19:15
Modified
2024-09-05 17:54
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: net: dsa: bcm_sf2: Fix a possible memory leak in bcm_sf2_mdio_register() bcm_sf2_mdio_register() calls of_phy_find_device() and then phy_device_remove() in a loop to remove existing PHY devices. of_phy_find_device() eventually calls bus_find_device(), which calls get_device() on the returned struct device * to increment the refcount. The current implementation does not decrement the refcount, which causes memory leak. This commit adds the missing phy_device_free() call to decrement the refcount via put_device() to balance the refcount.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7feef10768ea71d468d9bbc1e0d14c461876768cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a7d2808d67570e6acae45c2a96e0d59986888e4cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b7b8d9f5e679af60c94251fd6728dde34be69a71Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c05516c072903f6fb9134b8e7e1ad4bffcdc4819Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e3862093ee93fcfbdadcb7957f5f8974fffa806aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f3d5efe18a11f94150fee8b3fda9d62079af640aPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.11
linux linux_kernel 6.11


To clipboard 

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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: bcm_sf2: Fix a possible memory leak in bcm_sf2_mdio_register()\n\nbcm_sf2_mdio_register() calls of_phy_find_device() and then\nphy_device_remove() in a loop to remove existing PHY devices.\nof_phy_find_device() eventually calls bus_find_device(), which calls\nget_device() on the returned struct device * to increment the refcount.\nThe current implementation does not decrement the refcount, which causes\nmemory leak.\n\nThis commit adds the missing phy_device_free() call to decrement the\nrefcount via put_device() to balance the refcount."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: dsa: bcm_sf2: Se corrige una posible p\u00e9rdida de memoria en bcm_sf2_mdio_register() bcm_sf2_mdio_register() llama a of_phy_find_device() y luego a phy_device_remove() en un bucle para eliminar los dispositivos PHY existentes. of_phy_find_device() finalmente llama a bus_find_device(), que llama a get_device() en el struct device * devuelto para incrementar el refcount. La implementaci\u00f3n actual no disminuye el refcount, lo que causa una p\u00e9rdida de memoria. Esta confirmaci\u00f3n agrega la llamada phy_device_free() faltante para disminuir el refcount a trav\u00e9s de put_device() para equilibrar el refcount."
    }
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  "id": "CVE-2024-44971",
  "lastModified": "2024-09-05T17:54:36.607",
  "metrics": {
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        "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"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-09-04T19:15:31.367",
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  "vulnStatus": "Analyzed",
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          "value": "CWE-401"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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