CVE-2026-45877 (GCVE-0-2026-45877)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:16 – Updated: 2026-05-27 12:16
VLAI
EPSS
VEX
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)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
3703f53b99e4a7c373ce3568dd3f91f175ebb626 , < 0b605e8ce60698c27a26f512968a597fd620d2e8
(git)
Affected: 3703f53b99e4a7c373ce3568dd3f91f175ebb626 , < feb4bcfd405282de60aba321f13a1272b30c5af4 (git) Affected: 3703f53b99e4a7c373ce3568dd3f91f175ebb626 , < 272dac57caa981718e7188c80c703e7bb1998054 (git) Affected: 3703f53b99e4a7c373ce3568dd3f91f175ebb626 , < 56f7db581ee73af53cd512e00a6261a025bf1d58 (git) |
guessed | |
| 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) |
guessed |
{
"containers": {
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"affected": [
{
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"product": "Linux",
"programFiles": [
"drivers/hid/intel-ish-hid/ishtp/bus.c"
],
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"vendor": "Linux",
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"version": "3703f53b99e4a7c373ce3568dd3f91f175ebb626",
"versionType": "git"
},
{
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"versionType": "git"
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"version": "6.18.14",
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{
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"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]"
}
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"url": "https://git.kernel.org/stable/c/feb4bcfd405282de60aba321f13a1272b30c5af4"
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"url": "https://git.kernel.org/stable/c/272dac57caa981718e7188c80c703e7bb1998054"
},
{
"url": "https://git.kernel.org/stable/c/56f7db581ee73af53cd512e00a6261a025bf1d58"
}
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"title": "HID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients",
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"cveId": "CVE-2026-45877",
"datePublished": "2026-05-27T12:16:46.910Z",
"dateReserved": "2026-05-13T15:03:33.081Z",
"dateUpdated": "2026-05-27T12:16:46.910Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-45877",
"date": "2026-09-15",
"epss": "0.0016",
"percentile": "0.05521"
},
"microsoft_vex": {
"current_release_date": "2026-08-10T14:53:56.000Z",
"cve": "CVE-2026-45877",
"id": "msrc_CVE-2026-45877",
"initial_release_date": "2026-05-28T01:01:58.000Z",
"product_status:known_affected": "6",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "HID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-45877.json",
"version": "7"
},
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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-06-27T16:19:35+00:00",
"cve": "CVE-2026-45877",
"id": "CVE-2026-45877",
"initial_release_date": "2026-05-27T00:00:00+00:00",
"product_status:known_affected": "260",
"product_status:known_not_affected": "14",
"source": "Red Hat CSAF VEX",
"status": "final",
"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"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T13:38:57Z",
"cve": "CVE-2026-45877",
"id": "CVE-2026-45877",
"initial_release_date": "2026-05-28T03:57:01Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "643",
"product_status:known_not_affected": "23",
"product_status:recommended": "273",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-45877",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-45877.json",
"version": "8"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- 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.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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