CVE-2026-45877 (GCVE-0-2026-45877)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:16 – Updated: 2026-05-27 12:16
VLAI
Title
HID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients
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]
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3703f53b99e4a7c373ce3568dd3f91f175ebb626 , < 0b605e8ce60698c27a26f512968a597fd620d2e8 (git)
Affected: 3703f53b99e4a7c373ce3568dd3f91f175ebb626 , < feb4bcfd405282de60aba321f13a1272b30c5af4 (git)
Affected: 3703f53b99e4a7c373ce3568dd3f91f175ebb626 , < 272dac57caa981718e7188c80c703e7bb1998054 (git)
Affected: 3703f53b99e4a7c373ce3568dd3f91f175ebb626 , < 56f7db581ee73af53cd512e00a6261a025bf1d58 (git)
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Linux Linux Affected: 4.9
Unaffected: 0 , < 4.9 (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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    "dateReserved": "2026-05-13T15:03:33.081Z",
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    "redhat_vex": {
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      "cve": "CVE-2026-45877",
      "id": "CVE-2026-45877",
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      "product_status:known_affected": "260",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: HID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45877.json",
      "version": "3"
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  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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