Vulnerability Description
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]
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.9, < 6.12.75 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0b605e8ce60698c27a26f512968a597fd620d2e8Patch
- https://git.kernel.org/stable/c/272dac57caa981718e7188c80c703e7bb1998054Patch
- https://git.kernel.org/stable/c/56f7db581ee73af53cd512e00a6261a025bf1d58Patch
- https://git.kernel.org/stable/c/feb4bcfd405282de60aba321f13a1272b30c5af4Patch
FAQ
What is CVE-2026-45877?
CVE-2026-45877 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 NUL...
How severe is CVE-2026-45877?
CVE-2026-45877 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45877?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.