FKIE_CVE-2022-49968

Vulnerability from fkie_nvd - Published: 2025-06-18 11:15 - Updated: 2025-11-13 21:15
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ieee802154/adf7242: defer destroy_workqueue call There is a possible race condition (use-after-free) like below (FREE) | (USE) adf7242_remove | adf7242_channel cancel_delayed_work_sync | destroy_workqueue (1) | adf7242_cmd_rx | mod_delayed_work (2) | The root cause for this race is that the upper layer (ieee802154) is unaware of this detaching event and the function adf7242_channel can be called without any checks. To fix this, we can add a flag write at the beginning of adf7242_remove and add flag check in adf7242_channel. Or we can just defer the destructive operation like other commit 3e0588c291d6 ("hamradio: defer ax25 kfree after unregister_netdev") which let the ieee802154_unregister_hw() to handle the synchronization. This patch takes the second option. runs")
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4cPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 4.18
linux linux_kernel 4.18
linux linux_kernel 4.18
linux linux_kernel 4.18
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154/adf7242: defer destroy_workqueue call\n\nThere is a possible race condition (use-after-free) like below\n\n  (FREE)                     |  (USE)\n  adf7242_remove             |  adf7242_channel\n   cancel_delayed_work_sync  |\n    destroy_workqueue (1)    |   adf7242_cmd_rx\n                             |    mod_delayed_work (2)\n                             |\n\nThe root cause for this race is that the upper layer (ieee802154) is\nunaware of this detaching event and the function adf7242_channel can\nbe called without any checks.\n\nTo fix this, we can add a flag write at the beginning of adf7242_remove\nand add flag check in adf7242_channel. Or we can just defer the\ndestructive operation like other commit 3e0588c291d6 (\"hamradio: defer\nax25 kfree after unregister_netdev\") which let the\nieee802154_unregister_hw() to handle the synchronization. This patch\ntakes the second option.\n\nruns\")"
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ieee802154/adf7242: aplazar la llamada a destroy_workqueue Existe una posible condici\u00f3n de ejecuci\u00f3n (use-after-free) como la siguiente (FREE) | (USE) adf7242_remove | adf7242_channel cancel_delayed_work_sync | destroy_workqueue (1) | adf7242_cmd_rx | mod_delayed_work (2) | La causa ra\u00edz de esta ejecuci\u00f3n es que la capa superior (ieee802154) desconoce este evento de desconexi\u00f3n y la funci\u00f3n adf7242_channel se puede llamar sin ninguna comprobaci\u00f3n. Para solucionar esto, podemos a\u00f1adir una escritura de bandera al principio de adf7242_remove y a\u00f1adir la comprobaci\u00f3n de bandera en adf7242_channel. O podemos simplemente aplazar la operaci\u00f3n destructiva como en el commit 3e0588c291d6 (\"hamradio: defer ax25 kfree after unregister_netdev\"), que permite que ieee802154_unregister_hw() gestione la sincronizaci\u00f3n. Este parche utiliza la segunda opci\u00f3n."
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  "id": "CVE-2022-49968",
  "lastModified": "2025-11-13T21:15:49.140",
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          "attackVector": "LOCAL",
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          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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