CVE-2022-49427
Estado: AnalizadaMedia (5.5)—
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
Detalles técnicos trazas, registros y código del informe original
[ 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+0x164/0x1e0CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.27%
- Percentil entre todas las CVEs puntuadas: 17
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2022-49427",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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{
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"version": "5.15.46",
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{
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"version": "5.17.14",
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},
{
"status": "unaffected",
"version": "5.18.3",
"versionType": "semver",
"lessThanOrEqual": "5.18.*"
},
{
"status": "unaffected",
"version": "5.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/iommu/mtk_iommu.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-02-26T07:01:19.187",
"references": [
{
"url": "https://git.kernel.org/stable/c/053465ab20dcd324a43a1811ee98e5721e6a3e65",
"tags": [
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],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6eaa046c696c83542c56765cdde564d9818ff1fb",
"tags": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/98df772bdd1c4ce717a26289efea15cbbe4b64ed",
"tags": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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"tags": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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"vulnStatus": "Analyzed",
"weaknesses": [
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"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"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 > /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"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/mediatek: eliminar clk_disable en mtk_iommu_remove Después de el commit b34ea31fe013 (\"iommu/mediatek: habilitar siempre clk al reanudar\"), el reloj de iommu está controlado por la devolución de llamada en tiempo de ejecución. por lo tanto, elimine el control clk en mtk_iommu_remove. De lo contrario, aparecerá una advertencia como: echo 14018000.iommu > /sys/bus/platform/drivers/mtk-iommu/unbind [ 51.413044] ------------[ cortar aquí ]------------ [ 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 "
}
],
"lastModified": "2026-06-17T05:18:01.187",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"matchCriteriaId": "05F5E7D4-7FEF-4517-98E8-A1717719A5EB",
"versionEndExcluding": "5.15.46",
"versionStartIncluding": "5.12.4"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"matchCriteriaId": "15E2DD33-2255-4B76-9C15-04FF8CBAB252",
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"operator": "OR"
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}