fkie_cve-2024-50059
Vulnerability from fkie_nvd
Published
2024-10-21 20:15
Modified
2024-11-08 16:15
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ntb: ntb_hw_switchtec: Fix use after free vulnerability in switchtec_ntb_remove due to race condition In the switchtec_ntb_add function, it can call switchtec_ntb_init_sndev function, then &sndev->check_link_status_work is bound with check_link_status_work. switchtec_ntb_link_notification may be called to start the work. If we remove the module which will call switchtec_ntb_remove to make cleanup, it will free sndev through kfree(sndev), while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | check_link_status_work switchtec_ntb_remove | kfree(sndev); | | if (sndev->link_force_down) | // use sndev Fix it by ensuring that the work is canceled before proceeding with the cleanup in switchtec_ntb_remove.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/177925d9c8715a897bb79eca62628862213ba956Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ae45be8492460a35b5aebf6acac1f1d32708946Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5126d8f5567f49b52e21fca320eaa97977055099
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/92728fceefdaa2a0a3aae675f86193b006eeaa43Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b650189687822b705711f0567a65a164a314d8dfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e51aded92d42784313ba16c12f4f88cc4f973bbbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fa840ba4bd9f3bad7f104e5b32028ee73af8b3ddPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntb: ntb_hw_switchtec: Fix use after free vulnerability in switchtec_ntb_remove due to race condition\n\nIn the switchtec_ntb_add function, it can call switchtec_ntb_init_sndev\nfunction, then \u0026sndev-\u003echeck_link_status_work is bound with\ncheck_link_status_work. switchtec_ntb_link_notification may be called\nto start the work.\n\nIf we remove the module which will call switchtec_ntb_remove to make\ncleanup, it will free sndev through kfree(sndev), while the work\nmentioned above will be used. The sequence of operations that may lead\nto a UAF bug is as follows:\n\nCPU0                                 CPU1\n\n                        | check_link_status_work\nswitchtec_ntb_remove    |\nkfree(sndev);           |\n                        | if (sndev-\u003elink_force_down)\n                        | // use sndev\n\nFix it by ensuring that the work is canceled before proceeding with\nthe cleanup in switchtec_ntb_remove."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ntb: ntb_hw_switchtec: Se corrige la vulnerabilidad de use after free en switchtec_ntb_remove debido a la condici\u00f3n de ejecuci\u00f3n En la funci\u00f3n switchtec_ntb_add, puede llamar a la funci\u00f3n switchtec_ntb_init_sndev, luego \u0026amp;sndev-\u0026gt;check_link_status_work se vincula con check_link_status_work. Se puede llamar a switchtec_ntb_link_notification para iniciar el trabajo. Si eliminamos el m\u00f3dulo que llamar\u00e1 a switchtec_ntb_remove para realizar la limpieza, liberar\u00e1 sndev a trav\u00e9s de kfree(sndev), mientras que se utilizar\u00e1 el trabajo mencionado anteriormente. La secuencia de operaciones que puede llevar a un error de UAF es la siguiente: CPU0 CPU1 | check_link_status_work switchtec_ntb_remove | kfree(sndev); | | if (sndev-\u0026gt;link_force_down) | // use sndev Arr\u00e9glelo asegur\u00e1ndose de que el trabajo se cancele antes de continuar con la limpieza en switchtec_ntb_remove."
    }
  ],
  "id": "CVE-2024-50059",
  "lastModified": "2024-11-08T16:15:45.267",
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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      "source": "nvd@nist.gov",
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}


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