FKIE_CVE-2026-45877

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients During a warm reset flow, the cl->device pointer may be NULL if the reset occurs while clients are still being enumerated. Accessing cl->device->reference_count without a NULL check leads to a kernel panic. This issue was identified during multi-unit warm reboot stress clycles. Add a defensive NULL check for cl->device to ensure stability under such intensive testing conditions. KASAN: null-ptr-deref in range [0000000000000000-0000000000000007] Workqueue: ish_fw_update_wq fw_reset_work_fn Call Trace: ishtp_bus_remove_all_clients+0xbe/0x130 [intel_ishtp] ishtp_reset_handler+0x85/0x1a0 [intel_ishtp] fw_reset_work_fn+0x8a/0xc0 [intel_ish_ipc]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b605e8ce60698c27a26f512968a597fd620d2e8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/272dac57caa981718e7188c80c703e7bb1998054
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56f7db581ee73af53cd512e00a6261a025bf1d58
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/feb4bcfd405282de60aba321f13a1272b30c5af4
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients\n\nDuring a warm reset flow, the cl-\u003edevice pointer may be NULL if the\nreset occurs while clients are still being enumerated. Accessing\ncl-\u003edevice-\u003ereference_count without a NULL check leads to a kernel panic.\n\nThis issue was identified during multi-unit warm reboot stress clycles.\nAdd a defensive NULL check for cl-\u003edevice to ensure stability under\nsuch intensive testing conditions.\n\nKASAN: null-ptr-deref in range [0000000000000000-0000000000000007]\nWorkqueue: ish_fw_update_wq fw_reset_work_fn\n\nCall Trace:\n ishtp_bus_remove_all_clients+0xbe/0x130 [intel_ishtp]\n ishtp_reset_handler+0x85/0x1a0 [intel_ishtp]\n fw_reset_work_fn+0x8a/0xc0 [intel_ish_ipc]"
    }
  ],
  "id": "CVE-2026-45877",
  "lastModified": "2026-05-27T14:48:31.480",
  "metrics": {},
  "published": "2026-05-27T14:17:01.397",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0b605e8ce60698c27a26f512968a597fd620d2e8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/272dac57caa981718e7188c80c703e7bb1998054"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/56f7db581ee73af53cd512e00a6261a025bf1d58"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/feb4bcfd405282de60aba321f13a1272b30c5af4"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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