CVE-2026-80562 (GCVE-0-2026-80562)
Vulnerability from cvelistv5 – Published: 2026-08-26 14:37 – Updated: 2026-08-26 14:37
VLAI
EPSS
VEX
Title
gpio: ml-ioh: use raw_spinlock_t for the register lock
Summary
In the Linux kernel, the following vulnerability has been resolved:
gpio: ml-ioh: use raw_spinlock_t for the register lock
ioh_irq_type() is registered as the irq_chip .irq_set_type callback and
takes chip->spinlock with spin_lock_irqsave(). This callback is reached
from __setup_irq() -> __irq_set_trigger() -> chip->irq_set_type() while
the caller holds desc->lock, a raw_spinlock_t, with hardirqs disabled.
That context is not sleepable, but on PREEMPT_RT a regular spinlock_t is
an rtmutex-backed sleeping lock, so acquiring it there is invalid.
ioh_irq_enable() and ioh_irq_disable() take the same lock from the
.irq_enable/.irq_disable callbacks, which are likewise invoked with
desc->lock held.
Convert the register lock to raw_spinlock_t. The same lock also
serializes the GPIO direction/value callbacks and the suspend/resume
register save/restore, and those critical sections only perform short
sequences of MMIO register accesses (ioread32()/iowrite32()); the
.irq_set_type callback additionally emits a dev_warn() on an unsupported
type. None of these are sleepable operations, so keeping this register
lock non-sleeping is appropriate for the irqchip callbacks and does not
change the GPIO-side locking contract.
This is the same fix as commit a02b8950d619 ("gpio: pch: use
raw_spinlock_t for the register lock"); this driver shares the same
structure as gpio-pch.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
54be566317b6aece2389a95bb19ea209af9359be , < bc7934d0acd4fc1c7e5b7c68debdb4a991121628
(git)
Affected: 54be566317b6aece2389a95bb19ea209af9359be , < 0559b86611c35d342dd48542ea26a9e437046bf6 (git) Affected: 54be566317b6aece2389a95bb19ea209af9359be , < 600411ea1f2443fdf5b1af9b6480f616d7aff9d0 (git) |
guessed | |
| Linux | Linux |
Affected:
3.2
Unaffected: 0 , < 3.2 (semver) Unaffected: 6.18.46 , ≤ 6.18.* (semver) Unaffected: 7.1.10 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/gpio/gpio-ml-ioh.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "bc7934d0acd4fc1c7e5b7c68debdb4a991121628",
"status": "affected",
"version": "54be566317b6aece2389a95bb19ea209af9359be",
"versionType": "git"
},
{
"lessThan": "0559b86611c35d342dd48542ea26a9e437046bf6",
"status": "affected",
"version": "54be566317b6aece2389a95bb19ea209af9359be",
"versionType": "git"
},
{
"lessThan": "600411ea1f2443fdf5b1af9b6480f616d7aff9d0",
"status": "affected",
"version": "54be566317b6aece2389a95bb19ea209af9359be",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/gpio/gpio-ml-ioh.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.2"
},
{
"lessThan": "3.2",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.46",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.46",
"versionStartIncluding": "3.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.10",
"versionStartIncluding": "3.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "3.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: ml-ioh: use raw_spinlock_t for the register lock\n\nioh_irq_type() is registered as the irq_chip .irq_set_type callback and\ntakes chip-\u003espinlock with spin_lock_irqsave(). This callback is reached\nfrom __setup_irq() -\u003e __irq_set_trigger() -\u003e chip-\u003eirq_set_type() while\nthe caller holds desc-\u003elock, a raw_spinlock_t, with hardirqs disabled.\nThat context is not sleepable, but on PREEMPT_RT a regular spinlock_t is\nan rtmutex-backed sleeping lock, so acquiring it there is invalid.\nioh_irq_enable() and ioh_irq_disable() take the same lock from the\n.irq_enable/.irq_disable callbacks, which are likewise invoked with\ndesc-\u003elock held.\n\nConvert the register lock to raw_spinlock_t. The same lock also\nserializes the GPIO direction/value callbacks and the suspend/resume\nregister save/restore, and those critical sections only perform short\nsequences of MMIO register accesses (ioread32()/iowrite32()); the\n.irq_set_type callback additionally emits a dev_warn() on an unsupported\ntype. None of these are sleepable operations, so keeping this register\nlock non-sleeping is appropriate for the irqchip callbacks and does not\nchange the GPIO-side locking contract.\n\nThis is the same fix as commit a02b8950d619 (\"gpio: pch: use\nraw_spinlock_t for the register lock\"); this driver shares the same\nstructure as gpio-pch."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-26T14:37:27.171Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/bc7934d0acd4fc1c7e5b7c68debdb4a991121628"
},
{
"url": "https://git.kernel.org/stable/c/0559b86611c35d342dd48542ea26a9e437046bf6"
},
{
"url": "https://git.kernel.org/stable/c/600411ea1f2443fdf5b1af9b6480f616d7aff9d0"
}
],
"title": "gpio: ml-ioh: use raw_spinlock_t for the register lock",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-80562",
"datePublished": "2026-08-26T14:37:27.171Z",
"dateReserved": "2026-08-26T14:34:25.767Z",
"dateUpdated": "2026-08-26T14:37:27.171Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-80562\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-26T15:17:11.183\",\"lastModified\":\"2026-08-26T15:17:11.183\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ngpio: ml-ioh: use raw_spinlock_t for the register lock\\n\\nioh_irq_type() is registered as the irq_chip .irq_set_type callback and\\ntakes chip-\u003espinlock with spin_lock_irqsave(). This callback is reached\\nfrom __setup_irq() -\u003e __irq_set_trigger() -\u003e chip-\u003eirq_set_type() while\\nthe caller holds desc-\u003elock, a raw_spinlock_t, with hardirqs disabled.\\nThat context is not sleepable, but on PREEMPT_RT a regular spinlock_t is\\nan rtmutex-backed sleeping lock, so acquiring it there is invalid.\\nioh_irq_enable() and ioh_irq_disable() take the same lock from the\\n.irq_enable/.irq_disable callbacks, which are likewise invoked with\\ndesc-\u003elock held.\\n\\nConvert the register lock to raw_spinlock_t. The same lock also\\nserializes the GPIO direction/value callbacks and the suspend/resume\\nregister save/restore, and those critical sections only perform short\\nsequences of MMIO register accesses (ioread32()/iowrite32()); the\\n.irq_set_type callback additionally emits a dev_warn() on an unsupported\\ntype. None of these are sleepable operations, so keeping this register\\nlock non-sleeping is appropriate for the irqchip callbacks and does not\\nchange the GPIO-side locking contract.\\n\\nThis is the same fix as commit a02b8950d619 (\\\"gpio: pch: use\\nraw_spinlock_t for the register lock\\\"); this driver shares the same\\nstructure as gpio-pch.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/gpio/gpio-ml-ioh.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"54be566317b6aece2389a95bb19ea209af9359be\",\"lessThan\":\"bc7934d0acd4fc1c7e5b7c68debdb4a991121628\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54be566317b6aece2389a95bb19ea209af9359be\",\"lessThan\":\"0559b86611c35d342dd48542ea26a9e437046bf6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54be566317b6aece2389a95bb19ea209af9359be\",\"lessThan\":\"600411ea1f2443fdf5b1af9b6480f616d7aff9d0\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/gpio/gpio-ml-ioh.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.46\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.10\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0559b86611c35d342dd48542ea26a9e437046bf6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/600411ea1f2443fdf5b1af9b6480f616d7aff9d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bc7934d0acd4fc1c7e5b7c68debdb4a991121628\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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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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