fkie_cve-2025-38385
Vulnerability from fkie_nvd
Published
2025-07-25 13:15
Modified
2025-07-25 15:29
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: usb: lan78xx: fix WARN in __netif_napi_del_locked on disconnect Remove redundant netif_napi_del() call from disconnect path. A WARN may be triggered in __netif_napi_del_locked() during USB device disconnect: WARNING: CPU: 0 PID: 11 at net/core/dev.c:7417 __netif_napi_del_locked+0x2b4/0x350 This happens because netif_napi_del() is called in the disconnect path while NAPI is still enabled. However, it is not necessary to call netif_napi_del() explicitly, since unregister_netdev() will handle NAPI teardown automatically and safely. Removing the redundant call avoids triggering the warning. Full trace: lan78xx 1-1:1.0 enu1: Failed to read register index 0x000000c4. ret = -ENODEV lan78xx 1-1:1.0 enu1: Failed to set MAC down with error -ENODEV lan78xx 1-1:1.0 enu1: Link is Down lan78xx 1-1:1.0 enu1: Failed to read register index 0x00000120. ret = -ENODEV ------------[ cut here ]------------ WARNING: CPU: 0 PID: 11 at net/core/dev.c:7417 __netif_napi_del_locked+0x2b4/0x350 Modules linked in: flexcan can_dev fuse CPU: 0 UID: 0 PID: 11 Comm: kworker/0:1 Not tainted 6.16.0-rc2-00624-ge926949dab03 #9 PREEMPT Hardware name: SKOV IMX8MP CPU revC - bd500 (DT) Workqueue: usb_hub_wq hub_event pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __netif_napi_del_locked+0x2b4/0x350 lr : __netif_napi_del_locked+0x7c/0x350 sp : ffffffc085b673c0 x29: ffffffc085b673c0 x28: ffffff800b7f2000 x27: ffffff800b7f20d8 x26: ffffff80110bcf58 x25: ffffff80110bd978 x24: 1ffffff0022179eb x23: ffffff80110bc000 x22: ffffff800b7f5000 x21: ffffff80110bc000 x20: ffffff80110bcf38 x19: ffffff80110bcf28 x18: dfffffc000000000 x17: ffffffc081578940 x16: ffffffc08284cee0 x15: 0000000000000028 x14: 0000000000000006 x13: 0000000000040000 x12: ffffffb0022179e8 x11: 1ffffff0022179e7 x10: ffffffb0022179e7 x9 : dfffffc000000000 x8 : 0000004ffdde8619 x7 : ffffff80110bcf3f x6 : 0000000000000001 x5 : ffffff80110bcf38 x4 : ffffff80110bcf38 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 1ffffff0022179e7 x0 : 0000000000000000 Call trace: __netif_napi_del_locked+0x2b4/0x350 (P) lan78xx_disconnect+0xf4/0x360 usb_unbind_interface+0x158/0x718 device_remove+0x100/0x150 device_release_driver_internal+0x308/0x478 device_release_driver+0x1c/0x30 bus_remove_device+0x1a8/0x368 device_del+0x2e0/0x7b0 usb_disable_device+0x244/0x540 usb_disconnect+0x220/0x758 hub_event+0x105c/0x35e0 process_one_work+0x760/0x17b0 worker_thread+0x768/0xce8 kthread+0x3bc/0x690 ret_from_fork+0x10/0x20 irq event stamp: 211604 hardirqs last enabled at (211603): [<ffffffc0828cc9ec>] _raw_spin_unlock_irqrestore+0x84/0x98 hardirqs last disabled at (211604): [<ffffffc0828a9a84>] el1_dbg+0x24/0x80 softirqs last enabled at (211296): [<ffffffc080095f10>] handle_softirqs+0x820/0xbc8 softirqs last disabled at (210993): [<ffffffc080010288>] __do_softirq+0x18/0x20 ---[ end trace 0000000000000000 ]--- lan78xx 1-1:1.0 enu1: failed to kill vid 0081/0
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17a37b9a5dd945d86110838fb471e7139ba993a2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/510a6095d754df9d727f644ec5076b7929d6c9ea
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6c7ffc9af7186ed79403a3ffee9a1e5199fc7450
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7135056a49035597198280820c61b8c5dbe4a1d0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/968a419c95131e420f12bbdba19e96e2f6b071c4
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: lan78xx: fix WARN in __netif_napi_del_locked on disconnect\n\nRemove redundant netif_napi_del() call from disconnect path.\n\nA WARN may be triggered in __netif_napi_del_locked() during USB device\ndisconnect:\n\n  WARNING: CPU: 0 PID: 11 at net/core/dev.c:7417 __netif_napi_del_locked+0x2b4/0x350\n\nThis happens because netif_napi_del() is called in the disconnect path while\nNAPI is still enabled. However, it is not necessary to call netif_napi_del()\nexplicitly, since unregister_netdev() will handle NAPI teardown automatically\nand safely. Removing the redundant call avoids triggering the warning.\n\nFull trace:\n lan78xx 1-1:1.0 enu1: Failed to read register index 0x000000c4. ret = -ENODEV\n lan78xx 1-1:1.0 enu1: Failed to set MAC down with error -ENODEV\n lan78xx 1-1:1.0 enu1: Link is Down\n lan78xx 1-1:1.0 enu1: Failed to read register index 0x00000120. ret = -ENODEV\n ------------[ cut here ]------------\n WARNING: CPU: 0 PID: 11 at net/core/dev.c:7417 __netif_napi_del_locked+0x2b4/0x350\n Modules linked in: flexcan can_dev fuse\n CPU: 0 UID: 0 PID: 11 Comm: kworker/0:1 Not tainted 6.16.0-rc2-00624-ge926949dab03 #9 PREEMPT\n Hardware name: SKOV IMX8MP CPU revC - bd500 (DT)\n Workqueue: usb_hub_wq hub_event\n pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : __netif_napi_del_locked+0x2b4/0x350\n lr : __netif_napi_del_locked+0x7c/0x350\n sp : ffffffc085b673c0\n x29: ffffffc085b673c0 x28: ffffff800b7f2000 x27: ffffff800b7f20d8\n x26: ffffff80110bcf58 x25: ffffff80110bd978 x24: 1ffffff0022179eb\n x23: ffffff80110bc000 x22: ffffff800b7f5000 x21: ffffff80110bc000\n x20: ffffff80110bcf38 x19: ffffff80110bcf28 x18: dfffffc000000000\n x17: ffffffc081578940 x16: ffffffc08284cee0 x15: 0000000000000028\n x14: 0000000000000006 x13: 0000000000040000 x12: ffffffb0022179e8\n x11: 1ffffff0022179e7 x10: ffffffb0022179e7 x9 : dfffffc000000000\n x8 : 0000004ffdde8619 x7 : ffffff80110bcf3f x6 : 0000000000000001\n x5 : ffffff80110bcf38 x4 : ffffff80110bcf38 x3 : 0000000000000000\n x2 : 0000000000000000 x1 : 1ffffff0022179e7 x0 : 0000000000000000\n Call trace:\n  __netif_napi_del_locked+0x2b4/0x350 (P)\n  lan78xx_disconnect+0xf4/0x360\n  usb_unbind_interface+0x158/0x718\n  device_remove+0x100/0x150\n  device_release_driver_internal+0x308/0x478\n  device_release_driver+0x1c/0x30\n  bus_remove_device+0x1a8/0x368\n  device_del+0x2e0/0x7b0\n  usb_disable_device+0x244/0x540\n  usb_disconnect+0x220/0x758\n  hub_event+0x105c/0x35e0\n  process_one_work+0x760/0x17b0\n  worker_thread+0x768/0xce8\n  kthread+0x3bc/0x690\n  ret_from_fork+0x10/0x20\n irq event stamp: 211604\n hardirqs last  enabled at (211603): [\u003cffffffc0828cc9ec\u003e] _raw_spin_unlock_irqrestore+0x84/0x98\n hardirqs last disabled at (211604): [\u003cffffffc0828a9a84\u003e] el1_dbg+0x24/0x80\n softirqs last  enabled at (211296): [\u003cffffffc080095f10\u003e] handle_softirqs+0x820/0xbc8\n softirqs last disabled at (210993): [\u003cffffffc080010288\u003e] __do_softirq+0x18/0x20\n ---[ end trace 0000000000000000 ]---\n lan78xx 1-1:1.0 enu1: failed to kill vid 0081/0"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: usb: lan78xx: correcci\u00f3n de WARN en __netif_napi_del_locked al desconectar Eliminar la llamada redundante netif_napi_del() de la ruta de desconexi\u00f3n. Se puede activar una WARN en __netif_napi_del_locked() durante la desconexi\u00f3n del dispositivo USB: WARNING: CPU: 0 PID: 11 at net/core/dev.c:7417 __netif_napi_del_locked+0x2b4/0x350 This happens because netif_napi_del() is called in the disconnect path while NAPI is still enabled. However, it is not necessary to call netif_napi_del() explicitly, since unregister_netdev() will handle NAPI teardown automatically and safely. Removing the redundant call avoids triggering the warning. Full trace: lan78xx 1-1:1.0 enu1: Failed to read register index 0x000000c4. ret = -ENODEV lan78xx 1-1:1.0 enu1: Failed to set MAC down with error -ENODEV lan78xx 1-1:1.0 enu1: Link is Down lan78xx 1-1:1.0 enu1: Failed to read register index 0x00000120. ret = -ENODEV ------------[ cut here ]------------ WARNING: CPU: 0 PID: 11 at net/core/dev.c:7417 __netif_napi_del_locked+0x2b4/0x350 Modules linked in: flexcan can_dev fuse CPU: 0 UID: 0 PID: 11 Comm: kworker/0:1 Not tainted 6.16.0-rc2-00624-ge926949dab03 #9 PREEMPT Hardware name: SKOV IMX8MP CPU revC - bd500 (DT) Workqueue: usb_hub_wq hub_event pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __netif_napi_del_locked+0x2b4/0x350 lr : __netif_napi_del_locked+0x7c/0x350 sp : ffffffc085b673c0 x29: ffffffc085b673c0 x28: ffffff800b7f2000 x27: ffffff800b7f20d8 x26: ffffff80110bcf58 x25: ffffff80110bd978 x24: 1ffffff0022179eb x23: ffffff80110bc000 x22: ffffff800b7f5000 x21: ffffff80110bc000 x20: ffffff80110bcf38 x19: ffffff80110bcf28 x18: dfffffc000000000 x17: ffffffc081578940 x16: ffffffc08284cee0 x15: 0000000000000028 x14: 0000000000000006 x13: 0000000000040000 x12: ffffffb0022179e8 x11: 1ffffff0022179e7 x10: ffffffb0022179e7 x9 : dfffffc000000000 x8 : 0000004ffdde8619 x7 : ffffff80110bcf3f x6 : 0000000000000001 x5 : ffffff80110bcf38 x4 : ffffff80110bcf38 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 1ffffff0022179e7 x0 : 0000000000000000 Call trace: __netif_napi_del_locked+0x2b4/0x350 (P) lan78xx_disconnect+0xf4/0x360 usb_unbind_interface+0x158/0x718 device_remove+0x100/0x150 device_release_driver_internal+0x308/0x478 device_release_driver+0x1c/0x30 bus_remove_device+0x1a8/0x368 device_del+0x2e0/0x7b0 usb_disable_device+0x244/0x540 usb_disconnect+0x220/0x758 hub_event+0x105c/0x35e0 process_one_work+0x760/0x17b0 worker_thread+0x768/0xce8 kthread+0x3bc/0x690 ret_from_fork+0x10/0x20 irq event stamp: 211604 hardirqs last enabled at (211603): [] _raw_spin_unlock_irqrestore+0x84/0x98 hardirqs last disabled at (211604): [] el1_dbg+0x24/0x80 softirqs last enabled at (211296): [] handle_softirqs+0x820/0xbc8 softirqs last disabled at (210993): [] __do_softirq+0x18/0x20 ---[ end trace 0000000000000000 ]--- lan78xx 1-1:1.0 enu1: failed to kill vid 0081/0"
    }
  ],
  "id": "CVE-2025-38385",
  "lastModified": "2025-07-25T15:29:19.837",
  "metrics": {},
  "published": "2025-07-25T13:15:27.760",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/17a37b9a5dd945d86110838fb471e7139ba993a2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/510a6095d754df9d727f644ec5076b7929d6c9ea"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6c7ffc9af7186ed79403a3ffee9a1e5199fc7450"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7135056a49035597198280820c61b8c5dbe4a1d0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/968a419c95131e420f12bbdba19e96e2f6b071c4"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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