CVE-2024-57913

Estado: ModificadaMedia (4.7)—

In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: f_fs: Remove WARN_ON in functionfs_bind

This commit addresses an issue related to below kernel panic where panic_on_warn is enabled. It is caused by the unnecessary use of WARN_ON in functionsfs_bind, which easily leads to the following scenarios.

->usb_ffs_open_thread() ->UDC write ->open_functionfs() ->configfs_write_iter() ->adb_open() ->gadget_dev_desc_UDC_store() ->adb_write() ->usb_gadget_register_driver_owner ->driver_register() ->StartMonitor() ->bus_add_driver() ->adb_read() ->gadget_bind_driver() <times-out without BIND event> ->configfs_composite_bind() ->usb_add_function() ->open_functionfs() ->ffs_func_bind() ->adb_open() ->functionfs_bind() <ffs->state !=FFS_ACTIVE>

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The adb_open, adb_read, and adb_write operations are invoked from the daemon, but trying to bind the function is a process that is invoked by UDC write through configfs, which opens up the possibility of a race condition between the two paths. In this race scenario, the kernel panic occurs due to the WARN_ON from functionfs_bind when panic_on_warn is enabled. This commit fixes the kernel panic by removing the unnecessary WARN_ON.

Detalles técnicos trazas, registros y código del informe original

1.adb_write in adbd               2. UDC write via configfs
  =================	             =====================

Kernel panic - not syncing: kernel: panic_on_warn set ...
[   14.542395] Call trace:
[   14.542464]  ffs_func_bind+0x1c8/0x14a8
[   14.542468]  usb_add_function+0xcc/0x1f0
[   14.542473]  configfs_composite_bind+0x468/0x588
[   14.542478]  gadget_bind_driver+0x108/0x27c
[   14.542483]  really_probe+0x190/0x374
[   14.542488]  __driver_probe_device+0xa0/0x12c
[   14.542492]  driver_probe_device+0x3c/0x220
[   14.542498]  __driver_attach+0x11c/0x1fc
[   14.542502]  bus_for_each_dev+0x104/0x160
[   14.542506]  driver_attach+0x24/0x34
[   14.542510]  bus_add_driver+0x154/0x270
[   14.542514]  driver_register+0x68/0x104
[   14.542518]  usb_gadget_register_driver_owner+0x48/0xf4
[   14.542523]  gadget_dev_desc_UDC_store+0xf8/0x144
[   14.542526]  configfs_write_iter+0xf0/0x138

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 4.7

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 7
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-362
CWE-362

Referencias

JSON original (NVD)

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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_fs: Remove WARN_ON in functionfs_bind\n\nThis commit addresses an issue related to below kernel panic where\npanic_on_warn is enabled. It is caused by the unnecessary use of WARN_ON\nin functionsfs_bind, which easily leads to the following scenarios.\n\n1.adb_write in adbd               2. UDC write via configfs\n  =================\t             =====================\n\n->usb_ffs_open_thread()           ->UDC write\n ->open_functionfs()               ->configfs_write_iter()\n  ->adb_open()                      ->gadget_dev_desc_UDC_store()\n   ->adb_write()                     ->usb_gadget_register_driver_owner\n                                      ->driver_register()\n->StartMonitor()                       ->bus_add_driver()\n ->adb_read()                           ->gadget_bind_driver()\n<times-out without BIND event>           ->configfs_composite_bind()\n                                          ->usb_add_function()\n->open_functionfs()                        ->ffs_func_bind()\n ->adb_open()                               ->functionfs_bind()\n                                       <ffs->state !=FFS_ACTIVE>\n\nThe adb_open, adb_read, and adb_write operations are invoked from the\ndaemon, but trying to bind the function is a process that is invoked by\nUDC write through configfs, which opens up the possibility of a race\ncondition between the two paths. In this race scenario, the kernel panic\noccurs due to the WARN_ON from functionfs_bind when panic_on_warn is\nenabled. This commit fixes the kernel panic by removing the unnecessary\nWARN_ON.\n\nKernel panic - not syncing: kernel: panic_on_warn set ...\n[   14.542395] Call trace:\n[   14.542464]  ffs_func_bind+0x1c8/0x14a8\n[   14.542468]  usb_add_function+0xcc/0x1f0\n[   14.542473]  configfs_composite_bind+0x468/0x588\n[   14.542478]  gadget_bind_driver+0x108/0x27c\n[   14.542483]  really_probe+0x190/0x374\n[   14.542488]  __driver_probe_device+0xa0/0x12c\n[   14.542492]  driver_probe_device+0x3c/0x220\n[   14.542498]  __driver_attach+0x11c/0x1fc\n[   14.542502]  bus_for_each_dev+0x104/0x160\n[   14.542506]  driver_attach+0x24/0x34\n[   14.542510]  bus_add_driver+0x154/0x270\n[   14.542514]  driver_register+0x68/0x104\n[   14.542518]  usb_gadget_register_driver_owner+0x48/0xf4\n[   14.542523]  gadget_dev_desc_UDC_store+0xf8/0x144\n[   14.542526]  configfs_write_iter+0xf0/0x138"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: gadget: f_fs: eliminar WARN_ON en functionfs_bind Esta confirmación soluciona un problema relacionado con el pánico del kernel que se muestra a continuación, donde panic_on_warn está habilitado. Es causado por el uso innecesario de WARN_ON en functionsfs_bind, lo que fácilmente conduce a los siguientes escenarios. 1.adb_write en adbd 2. Escritura de UDC a través de configfs ================= ====================== -&gt;usb_ffs_open_thread() -&gt;Escritura de UDC -&gt;open_functionfs() -&gt;configfs_write_iter() -&gt;adb_open() -&gt;gadget_dev_desc_UDC_store() -&gt;adb_write() -&gt;usb_gadget_register_driver_owner -&gt;driver_register() -&gt;StartMonitor() -&gt;bus_add_driver() -&gt;adb_read() -&gt;gadget_bind_driver()  -&gt;configfs_composite_bind() -&gt;usb_add_function() -&gt;open_functionfs() -&gt;ffs_func_bind() -&gt;adb_open() -&gt;functionfs_bind() state !=FFS_ACTIVE&gt; Las operaciones adb_open, adb_read y adb_write se invocan desde el daemon, pero intentar vincular la función es un proceso que se invoca mediante escritura UDC a través de configfs, lo que abre la posibilidad de una condición de ejecución entre las dos rutas. En este escenario de ejecución, el pánico del kernel se produce debido al WARN_ON de functionfs_bind cuando panic_on_warn está habilitado. Esta confirmación corrige el pánico del kernel eliminando el WARN_ON innecesario. Pánico del núcleo: no se sincroniza: núcleo: panic_on_warn establecido ... [ 14.542395] Seguimiento de llamadas: [ 14.542464] ffs_func_bind+0x1c8/0x14a8 [ 14.542468] usb_add_function+0xcc/0x1f0 [ 14.542473] configfs_composite_bind+0x468/0x588 [ 14.542478] gadget_bind_driver+0x108/0x27c [ 14.542483] really_probe+0x190/0x374 [ 14.542488] __driver_probe_device+0xa0/0x12c [ 14.542492] controlador_probe_device+0x3c/0x220 [ 14.542498] __driver_attach+0x11c/0x1fc [ 14.542502] bus_for_each_dev+0x104/0x160 [ 14.542506] controlador_attach+0x24/0x34 [ 14.542510] bus_add_driver+0x154/0x270 [ 14.542514] controlador_register+0x68/0x104 [ 14.542518] usb_gadget_register_driver_owner+0x48/0xf4 [ 14.542523] gadget_dev_desc_UDC_store+0xf8/0x144 [ 14.542526] configfs_write_iter+0xf0/0x138"
    }
  ],
  "lastModified": "2026-06-17T08:14:13.227",
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