CVE-2022-49427 (GCVE-0-2022-49427)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:12 – Updated: 2025-05-04 12:44
VLAI?
Title
iommu/mediatek: Remove clk_disable in mtk_iommu_remove
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/mediatek: Remove clk_disable in mtk_iommu_remove After the commit b34ea31fe013 ("iommu/mediatek: Always enable the clk on resume"), the iommu clock is controlled by the runtime callback. thus remove the clk control in the mtk_iommu_remove. Otherwise, it will warning like: echo 14018000.iommu > /sys/bus/platform/drivers/mtk-iommu/unbind [ 51.413044] ------------[ cut here ]------------ [ 51.413648] vpp0_smi_iommu already disabled [ 51.414233] WARNING: CPU: 2 PID: 157 at */v5.15-rc1/kernel/mediatek/ drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8 [ 51.417174] Hardware name: MT8195V/C(ENG) (DT) [ 51.418635] pc : clk_core_disable+0xb0/0xb8 [ 51.419177] lr : clk_core_disable+0xb0/0xb8 ... [ 51.429375] Call trace: [ 51.429694] clk_core_disable+0xb0/0xb8 [ 51.430193] clk_core_disable_lock+0x24/0x40 [ 51.430745] clk_disable+0x20/0x30 [ 51.431189] mtk_iommu_remove+0x58/0x118 [ 51.431705] platform_remove+0x28/0x60 [ 51.432197] device_release_driver_internal+0x110/0x1f0 [ 51.432873] device_driver_detach+0x18/0x28 [ 51.433418] unbind_store+0xd4/0x108 [ 51.433886] drv_attr_store+0x24/0x38 [ 51.434363] sysfs_kf_write+0x40/0x58 [ 51.434843] kernfs_fop_write_iter+0x164/0x1e0
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b34ea31fe013569d42b7e8681ef3f717f77c5b72 , < 053465ab20dcd324a43a1811ee98e5721e6a3e65 (git)
Affected: b34ea31fe013569d42b7e8681ef3f717f77c5b72 , < 9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1 (git)
Affected: b34ea31fe013569d42b7e8681ef3f717f77c5b72 , < 6eaa046c696c83542c56765cdde564d9818ff1fb (git)
Affected: b34ea31fe013569d42b7e8681ef3f717f77c5b72 , < 98df772bdd1c4ce717a26289efea15cbbe4b64ed (git)
Affected: 5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca (git)
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    Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.46 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
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          "product": "Linux",
          "programFiles": [
            "drivers/iommu/mtk_iommu.c"
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          "programFiles": [
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          "vendor": "Linux",
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              "status": "affected",
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              "version": "5.17.14",
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            {
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              "status": "unaffected",
              "version": "5.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.46",
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                  "vulnerable": true
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                {
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/mediatek: Remove clk_disable in mtk_iommu_remove\n\nAfter the commit b34ea31fe013 (\"iommu/mediatek: Always enable the clk on\nresume\"), the iommu clock is controlled by the runtime callback.\nthus remove the clk control in the mtk_iommu_remove.\n\nOtherwise, it will warning like:\n\necho 14018000.iommu \u003e /sys/bus/platform/drivers/mtk-iommu/unbind\n\n[   51.413044] ------------[ cut here ]------------\n[   51.413648] vpp0_smi_iommu already disabled\n[   51.414233] WARNING: CPU: 2 PID: 157 at */v5.15-rc1/kernel/mediatek/\n                          drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8\n[   51.417174] Hardware name: MT8195V/C(ENG) (DT)\n[   51.418635] pc : clk_core_disable+0xb0/0xb8\n[   51.419177] lr : clk_core_disable+0xb0/0xb8\n...\n[   51.429375] Call trace:\n[   51.429694]  clk_core_disable+0xb0/0xb8\n[   51.430193]  clk_core_disable_lock+0x24/0x40\n[   51.430745]  clk_disable+0x20/0x30\n[   51.431189]  mtk_iommu_remove+0x58/0x118\n[   51.431705]  platform_remove+0x28/0x60\n[   51.432197]  device_release_driver_internal+0x110/0x1f0\n[   51.432873]  device_driver_detach+0x18/0x28\n[   51.433418]  unbind_store+0xd4/0x108\n[   51.433886]  drv_attr_store+0x24/0x38\n[   51.434363]  sysfs_kf_write+0x40/0x58\n[   51.434843]  kernfs_fop_write_iter+0x164/0x1e0"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T12:44:41.612Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/053465ab20dcd324a43a1811ee98e5721e6a3e65"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/6eaa046c696c83542c56765cdde564d9818ff1fb"
        },
        {
          "url": "https://git.kernel.org/stable/c/98df772bdd1c4ce717a26289efea15cbbe4b64ed"
        }
      ],
      "title": "iommu/mediatek: Remove clk_disable in mtk_iommu_remove",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49427",
    "datePublished": "2025-02-26T02:12:47.692Z",
    "dateReserved": "2025-02-26T02:08:31.569Z",
    "dateUpdated": "2025-05-04T12:44:41.612Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • 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.
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