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CVE-2026-80562 (GCVE-0-2026-80562)

Vulnerability from cvelistv5 – Published: 2026-08-26 14:37 – Updated: 2026-08-27 12:40
VLAI
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
Vendor Product Version CPE status
Linux Linux Affected: 54be566317b6aece2389a95bb19ea209af9359be , < 431b10133113537660a6090a2856b0d74d1b06de (git)
Affected: 54be566317b6aece2389a95bb19ea209af9359be , < 359e6b1168c9a62a7bd214ace476aaa2d57eebe8 (git)
Affected: 54be566317b6aece2389a95bb19ea209af9359be , < 63d2230e5076c12f93d2a1d1bff2fbbf6cf32f3c (git)
Affected: 54be566317b6aece2389a95bb19ea209af9359be , < b6505a4cea45dd92eb753581b1ad9b524b5fcc34 (git)
Affected: 54be566317b6aece2389a95bb19ea209af9359be , < 84be002b40d30c56a91873b236e2d9001bbee363 (git)
Affected: 54be566317b6aece2389a95bb19ea209af9359be , < bc7934d0acd4fc1c7e5b7c68debdb4a991121628 (git)
Affected: 54be566317b6aece2389a95bb19ea209af9359be , < 0559b86611c35d342dd48542ea26a9e437046bf6 (git)
Affected: 54be566317b6aece2389a95bb19ea209af9359be , < 600411ea1f2443fdf5b1af9b6480f616d7aff9d0 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.2
Unaffected: 0 , < 3.2 (semver)
Unaffected: 5.10.267 , ≤ 5.10.* (semver)
Unaffected: 5.15.218 , ≤ 5.15.* (semver)
Unaffected: 6.1.185 , ≤ 6.1.* (semver)
Unaffected: 6.6.154 , ≤ 6.6.* (semver)
Unaffected: 6.12.106 , ≤ 6.12.* (semver)
Unaffected: 6.18.46 , ≤ 6.18.* (semver)
Unaffected: 7.1.10 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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      "cpeApplicability": [
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          "nodes": [
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                  "versionEndExcluding": "5.10.267",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "7.2",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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      ],
      "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": "2026-08-27T12:40:17.967Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/431b10133113537660a6090a2856b0d74d1b06de"
        },
        {
          "url": "https://git.kernel.org/stable/c/359e6b1168c9a62a7bd214ace476aaa2d57eebe8"
        },
        {
          "url": "https://git.kernel.org/stable/c/63d2230e5076c12f93d2a1d1bff2fbbf6cf32f3c"
        },
        {
          "url": "https://git.kernel.org/stable/c/b6505a4cea45dd92eb753581b1ad9b524b5fcc34"
        },
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          "url": "https://git.kernel.org/stable/c/84be002b40d30c56a91873b236e2d9001bbee363"
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          "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": "2026-08-27T12:40:17.967Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-80562",
      "date": "2026-09-15",
      "epss": "0.00176",
      "percentile": "0.0739"
    },
    "microsoft_vex": {
      "current_release_date": "2026-08-27T01:04:58.000Z",
      "cve": "CVE-2026-80562",
      "id": "msrc_CVE-2026-80562",
      "initial_release_date": "2026-08-27T01:04:58.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "gpio: ml-ioh: use raw_spinlock_t for the register lock",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-80562.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-80562\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-26T15:17:11.183\",\"lastModified\":\"2026-08-27T13:18:40.533\",\"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\":\"431b10133113537660a6090a2856b0d74d1b06de\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54be566317b6aece2389a95bb19ea209af9359be\",\"lessThan\":\"359e6b1168c9a62a7bd214ace476aaa2d57eebe8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54be566317b6aece2389a95bb19ea209af9359be\",\"lessThan\":\"63d2230e5076c12f93d2a1d1bff2fbbf6cf32f3c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54be566317b6aece2389a95bb19ea209af9359be\",\"lessThan\":\"b6505a4cea45dd92eb753581b1ad9b524b5fcc34\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54be566317b6aece2389a95bb19ea209af9359be\",\"lessThan\":\"84be002b40d30c56a91873b236e2d9001bbee363\",\"versionType\":\"git\",\"status\":\"affected\"},{\"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\":\"5.10.267\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.218\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.185\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.154\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.106\",\"lessThanOrEqual\":\"6.12.*\",\"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/359e6b1168c9a62a7bd214ace476aaa2d57eebe8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/431b10133113537660a6090a2856b0d74d1b06de\",\"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/63d2230e5076c12f93d2a1d1bff2fbbf6cf32f3c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/84be002b40d30c56a91873b236e2d9001bbee363\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b6505a4cea45dd92eb753581b1ad9b524b5fcc34\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bc7934d0acd4fc1c7e5b7c68debdb4a991121628\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-27T07:57:08+00:00",
      "cve": "CVE-2026-80562",
      "id": "CVE-2026-80562",
      "initial_release_date": "2026-08-26T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: gpio: ml-ioh: use raw_spinlock_t for the register lock",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80562.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-15T01:11:24Z",
      "cve": "CVE-2026-80562",
      "id": "CVE-2026-80562",
      "initial_release_date": "2026-08-27T00:11:52Z",
      "product_status:known_affected": "349",
      "product_status:known_not_affected": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80562",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80562.json",
      "version": "7"
    }
  }
}



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