{
  "cveId": "CVE-2026-43479",
  "url": "https://patchblox.com/security/cve/CVE-2026-43479",
  "summary": "CVE-2026-43479 is fixed in linux on 1 platform by DEBIAN-CVE-2026-43479 (version 6.19.10-1), released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: usb: lan78xx: fix WARN in __netif_napi_del_...",
  "description": "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\u002B0x2b4/0x350  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\u002B0x2b4/0x350  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\u002B0x2b4/0x350  lr : __netif_napi_del_locked\u002B0x7c/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\u002B0x2b4/0x350 (P)   lan78xx_disconnect\u002B0xf4/0x360   usb_unbind_interface\u002B0x158/0x718   device_remove\u002B0x100/0x150   device_release_driver_internal\u002B0x308/0x478   device_release_driver\u002B0x1c/0x30   bus_remove_device\u002B0x1a8/0x368   device_del\u002B0x2e0/0x7b0   usb_disable_device\u002B0x244/0x540   usb_disconnect\u002B0x220/0x758   hub_event\u002B0x105c/0x35e0   process_one_work\u002B0x760/0x17b0   worker_thread\u002B0x768/0xce8   kthread\u002B0x3bc/0x690   ret_from_fork\u002B0x10/0x20  irq event stamp: 211604  hardirqs last  enabled at (211603): [\u003Cffffffc0828cc9ec\u003E] _raw_spin_unlock_irqrestore\u002B0x84/0x98  hardirqs last disabled at (211604): [\u003Cffffffc0828a9a84\u003E] el1_dbg\u002B0x24/0x80  softirqs last  enabled at (211296): [\u003Cffffffc080095f10\u003E] handle_softirqs\u002B0x820/0xbc8  softirqs last disabled at (210993): [\u003Cffffffc080010288\u003E] __do_softirq\u002B0x18/0x20  ---[ end trace 0000000000000000 ]---  lan78xx 1-1:1.0 enu1: failed to kill vid 0081/0",
  "published": "2026-05-13T16:16:51Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00112,
  "epssPercentile": 0.01404,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.10-1",
      "fix": "DEBIAN-CVE-2026-43479",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-43479",
      "released": "2026-05-15T16:01:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}