CVE-2026-45877
published 2026-05-27CVE-2026-45877: 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…
medium5.5
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]
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 3703f53b99e4a7c373ce3568dd3f91f175ebb626 < 0b605e8ce60698c27a26f512968a597fd620d2e8 | 0b605e8ce60698c27a26f512968a597fd620d2e8 |
| linux | linux | >= 3703f53b99e4a7c373ce3568dd3f91f175ebb626 < feb4bcfd405282de60aba321f13a1272b30c5af4 | feb4bcfd405282de60aba321f13a1272b30c5af4 |
| linux | linux | >= 3703f53b99e4a7c373ce3568dd3f91f175ebb626 < 272dac57caa981718e7188c80c703e7bb1998054 | 272dac57caa981718e7188c80c703e7bb1998054 |
| linux | linux | >= 3703f53b99e4a7c373ce3568dd3f91f175ebb626 < 56f7db581ee73af53cd512e00a6261a025bf1d58 | 56f7db581ee73af53cd512e00a6261a025bf1d58 |
| linux | linux_kernel | — | — |