CVE-2026-45877
HID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients
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]
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ 3703f53b99e4a7c373ce3568dd3f91f175ebb626; < 08baf418d79d289a7bc38be519289b3a48b83da9 (affected, git) ≥ 3703f53b99e4a7c373ce3568dd3f91f175ebb626; < cde7f709d1025dadfc52e903e43981c1644bd8bd (affected, git) ≥ 3703f53b99e4a7c373ce3568dd3f91f175ebb626; < 0b605e8ce60698c27a26f512968a597fd620d2e8 (affected, git) ≥ 3703f53b99e4a7c373ce3568dd3f91f175ebb626; < feb4bcfd405282de60aba321f13a1272b30c5af4 (affected, git) ≥ 3703f53b99e4a7c373ce3568dd3f91f175ebb626; < 272dac57caa981718e7188c80c703e7bb1998054 (affected, git) ≥ 3703f53b99e4a7c373ce3568dd3f91f175ebb626; < 56f7db581ee73af53cd512e00a6261a025bf1d58 (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
4.9 (affected) ≥ 0; < 4.9 (unaffected, semver) ≥ 6.1.191; ≤ 6.1.* (unaffected, semver) ≥ 6.6.160; ≤ 6.6.* (unaffected, semver) ≥ 6.12.75; ≤ 6.12.* (unaffected, semver) ≥ 6.18.14; ≤ 6.18.* (unaffected, semver) ≥ 6.19.4; ≤ 6.19.* (unaffected, semver) ≥ 7.0; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/08baf418d79d289a7bc38be519289b3a48b83da9CNA: Linux
- https://git.kernel.org/stable/c/cde7f709d1025dadfc52e903e43981c1644bd8bdCNA: Linux
- https://git.kernel.org/stable/c/0b605e8ce60698c27a26f512968a597fd620d2e8CNA: Linux
- https://git.kernel.org/stable/c/feb4bcfd405282de60aba321f13a1272b30c5af4CNA: Linux
- https://git.kernel.org/stable/c/272dac57caa981718e7188c80c703e7bb1998054CNA: Linux
- https://git.kernel.org/stable/c/56f7db581ee73af53cd512e00a6261a025bf1d58CNA: Linux
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