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{
"id": "CVE-2024-57913",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-01-19T12:15:25.477",
"lastModified": "2025-01-19T12:15:25.477",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"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"
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/82f60f3600aecd9ffcd0fbc4e193694511c85b47",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a8b6a18b9b66cc4c016d63132b59ce5383f7cdd2",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/dfc51e48bca475bbee984e90f33fdc537ce09699",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ea6a1498742430eb2effce0d1439ff29ef37dd7d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}