CVE-2021-47025 (GCVE-0-2021-47025)
Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2026-05-11 13:46
VLAI
EPSS
VEX
Title
iommu/mediatek: Always enable the clk on resume
Summary
In the Linux kernel, the following vulnerability has been resolved:
iommu/mediatek: Always enable the clk on resume
In mtk_iommu_runtime_resume always enable the clk, even
if m4u_dom is null. Otherwise the 'suspend' cb might
disable the clk which is already disabled causing the warning:
[ 1.586104] infra_m4u already disabled
[ 1.586133] WARNING: CPU: 0 PID: 121 at drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8
[ 1.594391] mtk-iommu 10205000.iommu: bound 18001000.larb (ops mtk_smi_larb_component_ops)
[ 1.598108] Modules linked in:
[ 1.598114] CPU: 0 PID: 121 Comm: kworker/0:2 Not tainted 5.12.0-rc5 #69
[ 1.609246] mtk-iommu 10205000.iommu: bound 14027000.larb (ops mtk_smi_larb_component_ops)
[ 1.617487] Hardware name: Google Elm (DT)
[ 1.617491] Workqueue: pm pm_runtime_work
[ 1.620545] mtk-iommu 10205000.iommu: bound 19001000.larb (ops mtk_smi_larb_component_ops)
[ 1.627229] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--)
[ 1.659297] pc : clk_core_disable+0xb0/0xb8
[ 1.663475] lr : clk_core_disable+0xb0/0xb8
[ 1.667652] sp : ffff800011b9bbe0
[ 1.670959] x29: ffff800011b9bbe0 x28: 0000000000000000
[ 1.676267] x27: ffff800011448000 x26: ffff8000100cfd98
[ 1.681574] x25: ffff800011b9bd48 x24: 0000000000000000
[ 1.686882] x23: 0000000000000000 x22: ffff8000106fad90
[ 1.692189] x21: 000000000000000a x20: ffff0000c0048500
[ 1.697496] x19: ffff0000c0048500 x18: ffffffffffffffff
[ 1.702804] x17: 0000000000000000 x16: 0000000000000000
[ 1.708112] x15: ffff800011460300 x14: fffffffffffe0000
[ 1.713420] x13: ffff8000114602d8 x12: 0720072007200720
[ 1.718727] x11: 0720072007200720 x10: 0720072007200720
[ 1.724035] x9 : ffff800011b9bbe0 x8 : ffff800011b9bbe0
[ 1.729342] x7 : 0000000000000009 x6 : ffff8000114b8328
[ 1.734649] x5 : 0000000000000000 x4 : 0000000000000000
[ 1.739956] x3 : 00000000ffffffff x2 : ffff800011460298
[ 1.745263] x1 : 1af1d7de276f4500 x0 : 0000000000000000
[ 1.750572] Call trace:
[ 1.753010] clk_core_disable+0xb0/0xb8
[ 1.756840] clk_core_disable_lock+0x24/0x40
[ 1.761105] clk_disable+0x20/0x30
[ 1.764501] mtk_iommu_runtime_suspend+0x88/0xa8
[ 1.769114] pm_generic_runtime_suspend+0x2c/0x48
[ 1.773815] __rpm_callback+0xe0/0x178
[ 1.777559] rpm_callback+0x24/0x88
[ 1.781041] rpm_suspend+0xdc/0x470
[ 1.784523] rpm_idle+0x12c/0x170
[ 1.787831] pm_runtime_work+0xa8/0xc0
[ 1.791573] process_one_work+0x1e8/0x360
[ 1.795580] worker_thread+0x44/0x478
[ 1.799237] kthread+0x150/0x158
[ 1.802460] ret_from_fork+0x10/0x30
[ 1.806034] ---[ end trace 82402920ef64573b ]---
[ 1.810728] ------------[ cut here ]------------
In addition, we now don't need to enable the clock from the
function mtk_iommu_hw_init since it is already enabled by the resume.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
c0b57581b73be7b43f39e0dff201c93413f6a668 , < 5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca
(git)
Affected: c0b57581b73be7b43f39e0dff201c93413f6a668 , < b34ea31fe013569d42b7e8681ef3f717f77c5b72 (git) |
|
| Linux | Linux |
Affected:
5.12
Unaffected: 0 , < 5.12 (semver) Unaffected: 5.12.4 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix) |
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"url": "https://git.kernel.org/stable/c/b34ea31fe013569d42b7e8681ef3f717f77c5b72"
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"descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu/mediatek: Always enable the clk on resume\\n\\nIn mtk_iommu_runtime_resume always enable the clk, even\\nif m4u_dom is null. Otherwise the \u0027suspend\u0027 cb might\\ndisable the clk which is already disabled causing the warning:\\n\\n[ 1.586104] infra_m4u already disabled\\n[ 1.586133] WARNING: CPU: 0 PID: 121 at drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8\\n[ 1.594391] mtk-iommu 10205000.iommu: bound 18001000.larb (ops mtk_smi_larb_component_ops)\\n[ 1.598108] Modules linked in:\\n[ 1.598114] CPU: 0 PID: 121 Comm: kworker/0:2 Not tainted 5.12.0-rc5 #69\\n[ 1.609246] mtk-iommu 10205000.iommu: bound 14027000.larb (ops mtk_smi_larb_component_ops)\\n[ 1.617487] Hardware name: Google Elm (DT)\\n[ 1.617491] Workqueue: pm pm_runtime_work\\n[ 1.620545] mtk-iommu 10205000.iommu: bound 19001000.larb (ops mtk_smi_larb_component_ops)\\n\\n[ 1.627229] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--)\\n[ 1.659297] pc : clk_core_disable+0xb0/0xb8\\n[ 1.663475] lr : clk_core_disable+0xb0/0xb8\\n[ 1.667652] sp : ffff800011b9bbe0\\n[ 1.670959] x29: ffff800011b9bbe0 x28: 0000000000000000\\n[ 1.676267] x27: ffff800011448000 x26: ffff8000100cfd98\\n[ 1.681574] x25: ffff800011b9bd48 x24: 0000000000000000\\n[ 1.686882] x23: 0000000000000000 x22: ffff8000106fad90\\n[ 1.692189] x21: 000000000000000a x20: ffff0000c0048500\\n[ 1.697496] x19: ffff0000c0048500 x18: ffffffffffffffff\\n[ 1.702804] x17: 0000000000000000 x16: 0000000000000000\\n[ 1.708112] x15: ffff800011460300 x14: fffffffffffe0000\\n[ 1.713420] x13: ffff8000114602d8 x12: 0720072007200720\\n[ 1.718727] x11: 0720072007200720 x10: 0720072007200720\\n[ 1.724035] x9 : ffff800011b9bbe0 x8 : ffff800011b9bbe0\\n[ 1.729342] x7 : 0000000000000009 x6 : ffff8000114b8328\\n[ 1.734649] x5 : 0000000000000000 x4 : 0000000000000000\\n[ 1.739956] x3 : 00000000ffffffff x2 : ffff800011460298\\n[ 1.745263] x1 : 1af1d7de276f4500 x0 : 0000000000000000\\n[ 1.750572] Call trace:\\n[ 1.753010] clk_core_disable+0xb0/0xb8\\n[ 1.756840] clk_core_disable_lock+0x24/0x40\\n[ 1.761105] clk_disable+0x20/0x30\\n[ 1.764501] mtk_iommu_runtime_suspend+0x88/0xa8\\n[ 1.769114] pm_generic_runtime_suspend+0x2c/0x48\\n[ 1.773815] __rpm_callback+0xe0/0x178\\n[ 1.777559] rpm_callback+0x24/0x88\\n[ 1.781041] rpm_suspend+0xdc/0x470\\n[ 1.784523] rpm_idle+0x12c/0x170\\n[ 1.787831] pm_runtime_work+0xa8/0xc0\\n[ 1.791573] process_one_work+0x1e8/0x360\\n[ 1.795580] worker_thread+0x44/0x478\\n[ 1.799237] kthread+0x150/0x158\\n[ 1.802460] ret_from_fork+0x10/0x30\\n[ 1.806034] ---[ end trace 82402920ef64573b ]---\\n[ 1.810728] ------------[ cut here ]------------\\n\\nIn addition, we now don\u0027t need to enable the clock from the\\nfunction mtk_iommu_hw_init since it is already enabled by the resume.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/mediatek: habilite siempre clk al reanudar. En mtk_iommu_runtime_resume habilite siempre clk, incluso si m4u_dom es nulo. De lo contrario, el cb \u0027suspender\u0027 podr\\u00eda desactivar el clk que ya est\\u00e1 desactivado provocando la advertencia: [1.586104] infra_m4u ya desactivado [1.586133] ADVERTENCIA: CPU: 0 PID: 121 en drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8 [ 1.594391] mtk-iommu 10205000.iommu: enlazado 18001000.larb (ops mtk_smi_larb_component_ops) [ 1.598108] M\\u00f3dulos vinculados en: [ 1.598114] CPU: 0 PID: 121 Comm: kworker/0:2 No contaminado 5.12.0 -rc5 #69 [ 1.609246] mtk-iommu 10205000.iommu: enlazado 14027000.larb (ops mtk_smi_larb_component_ops) [ 1.617487] Nombre del hardware: Google Elm (DT) [ 1.617491] Cola de trabajo: pm pm_runtime_work [ 1.620545] mtk-iomm u 10205000.iommu: encuadernado 19001000.larb (ops mtk_smi_larb_component_ops) [1.627229] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--) [1.659297] pc: clk_core_disable+0xb0/0xb8 [1.663475] lr: clk_core_disable+0xb0/0x b8 [1.667652] sp: ffff800011b9bbe0 [ 1.670959] x29: ffff800011b9bbe0 x28: 0000000000000000 [ 1.676267] x27: ffff800011448000 x26: ffff8000100cfd98 [ 1.681574] x25: ffff800011b9 bd48 x24: 0000000000000000 [ 1.686882] x23: 0000000000000000 x22: ffff8000106fad90 [ 1.692189] x21: 0000000000000000a x20: ffff0000c004850 0 [1,697496] x19: ffff0000c0048500 x18: ffffffffffffffff [ 1.702804] x17: 0000000000000000 x16: 00000000000000000 [ 1.708112] x15: ffff800011460300 x14: ffffffffffe000 0 [ 1.713420] x13: ffff8000114602d8 x12: 0720072007200720 [ 1.718727] x11: 0720072007200720 x10: 0720072007200720 [ 1.724035] x9 : ffff800 011b9bbe0 x8: ffff800011b9bbe0 [ 1.729342] x7: 0000000000000009 x6: ffff8000114b8328 [1.734649] x5: 0000000000000000 x4: 00000000000000000 [1.739956] x3: 00000000ffff ffff x2: ffff800011460298 [1.745263] x1: 1af1d7de276f4500 x0: 0000000000000000 [1.750572] Rastreo de llamadas: [1.753010] clk_core_disable+0xb0/0xb8 [ 1.756840] clk_core_disable_lock+0x24/0x40 [ 1.761105] clk_disable+0x20/0x30 [ 1.764501] mtk_iommu_runtime_suspend+0x88/0xa8 [ 1.769114] pm_generic_runtime_suspend+0x2c/0x48 [ 1 .773815] __rpm_callback+0xe0/0x178 [ 1.777559] rpm_callback+0x24/0x88 [ 1.781041] rpm_suspend+0xdc/0x470 [ 1.784523] rpm_idle+0x12c/0x170 [ 1.787831] pm_runtime_work+0xa8/0xc0 [ 1.791573] Process_one_work+0x1e8/0x360 [ 1.795580] trabajador_thread+0x44/0x478 [ 1.799237] kthread+0x150/0x158 [ 1.802460] ret_from_fork+ 0x10/0x30 [1.806034] ---[ final de seguimiento 82402920ef64573b ]--- [ 1.810728] ------------[ cortar aqu\\u00ed ]------------ Adem\\u00e1s , ahora no necesitamos habilitar el reloj desde la funci\\u00f3n mtk_iommu_hw_init ya que ya est\\u00e1 habilitado en el curr\\u00edculum.\"}]",
"id": "CVE-2021-47025",
"lastModified": "2024-12-06T18:52:52.237",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
"published": "2024-02-28T09:15:39.290",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2021-47025\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:39.290\",\"lastModified\":\"2026-06-17T04:16:13.763\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu/mediatek: Always enable the clk on resume\\n\\nIn mtk_iommu_runtime_resume always enable the clk, even\\nif m4u_dom is null. Otherwise the \u0027suspend\u0027 cb might\\ndisable the clk which is already disabled causing the warning:\\n\\n[ 1.586104] infra_m4u already disabled\\n[ 1.586133] WARNING: CPU: 0 PID: 121 at drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8\\n[ 1.594391] mtk-iommu 10205000.iommu: bound 18001000.larb (ops mtk_smi_larb_component_ops)\\n[ 1.598108] Modules linked in:\\n[ 1.598114] CPU: 0 PID: 121 Comm: kworker/0:2 Not tainted 5.12.0-rc5 #69\\n[ 1.609246] mtk-iommu 10205000.iommu: bound 14027000.larb (ops mtk_smi_larb_component_ops)\\n[ 1.617487] Hardware name: Google Elm (DT)\\n[ 1.617491] Workqueue: pm pm_runtime_work\\n[ 1.620545] mtk-iommu 10205000.iommu: bound 19001000.larb (ops mtk_smi_larb_component_ops)\\n\\n[ 1.627229] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--)\\n[ 1.659297] pc : clk_core_disable+0xb0/0xb8\\n[ 1.663475] lr : clk_core_disable+0xb0/0xb8\\n[ 1.667652] sp : ffff800011b9bbe0\\n[ 1.670959] x29: ffff800011b9bbe0 x28: 0000000000000000\\n[ 1.676267] x27: ffff800011448000 x26: ffff8000100cfd98\\n[ 1.681574] x25: ffff800011b9bd48 x24: 0000000000000000\\n[ 1.686882] x23: 0000000000000000 x22: ffff8000106fad90\\n[ 1.692189] x21: 000000000000000a x20: ffff0000c0048500\\n[ 1.697496] x19: ffff0000c0048500 x18: ffffffffffffffff\\n[ 1.702804] x17: 0000000000000000 x16: 0000000000000000\\n[ 1.708112] x15: ffff800011460300 x14: fffffffffffe0000\\n[ 1.713420] x13: ffff8000114602d8 x12: 0720072007200720\\n[ 1.718727] x11: 0720072007200720 x10: 0720072007200720\\n[ 1.724035] x9 : ffff800011b9bbe0 x8 : ffff800011b9bbe0\\n[ 1.729342] x7 : 0000000000000009 x6 : ffff8000114b8328\\n[ 1.734649] x5 : 0000000000000000 x4 : 0000000000000000\\n[ 1.739956] x3 : 00000000ffffffff x2 : ffff800011460298\\n[ 1.745263] x1 : 1af1d7de276f4500 x0 : 0000000000000000\\n[ 1.750572] Call trace:\\n[ 1.753010] clk_core_disable+0xb0/0xb8\\n[ 1.756840] clk_core_disable_lock+0x24/0x40\\n[ 1.761105] clk_disable+0x20/0x30\\n[ 1.764501] mtk_iommu_runtime_suspend+0x88/0xa8\\n[ 1.769114] pm_generic_runtime_suspend+0x2c/0x48\\n[ 1.773815] __rpm_callback+0xe0/0x178\\n[ 1.777559] rpm_callback+0x24/0x88\\n[ 1.781041] rpm_suspend+0xdc/0x470\\n[ 1.784523] rpm_idle+0x12c/0x170\\n[ 1.787831] pm_runtime_work+0xa8/0xc0\\n[ 1.791573] process_one_work+0x1e8/0x360\\n[ 1.795580] worker_thread+0x44/0x478\\n[ 1.799237] kthread+0x150/0x158\\n[ 1.802460] ret_from_fork+0x10/0x30\\n[ 1.806034] ---[ end trace 82402920ef64573b ]---\\n[ 1.810728] ------------[ cut here ]------------\\n\\nIn addition, we now don\u0027t need to enable the clock from the\\nfunction mtk_iommu_hw_init since it is already enabled by the resume.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/mediatek: habilite siempre clk al reanudar. En mtk_iommu_runtime_resume habilite siempre clk, incluso si m4u_dom es nulo. De lo contrario, el cb \u0027suspender\u0027 podr\u00eda desactivar el clk que ya est\u00e1 desactivado provocando la advertencia: [1.586104] infra_m4u ya desactivado [1.586133] ADVERTENCIA: CPU: 0 PID: 121 en drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8 [ 1.594391] mtk-iommu 10205000.iommu: enlazado 18001000.larb (ops mtk_smi_larb_component_ops) [ 1.598108] M\u00f3dulos vinculados en: [ 1.598114] CPU: 0 PID: 121 Comm: kworker/0:2 No contaminado 5.12.0 -rc5 #69 [ 1.609246] mtk-iommu 10205000.iommu: enlazado 14027000.larb (ops mtk_smi_larb_component_ops) [ 1.617487] Nombre del hardware: Google Elm (DT) [ 1.617491] Cola de trabajo: pm pm_runtime_work [ 1.620545] mtk-iomm u 10205000.iommu: encuadernado 19001000.larb (ops mtk_smi_larb_component_ops) [1.627229] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--) [1.659297] pc: clk_core_disable+0xb0/0xb8 [1.663475] lr: clk_core_disable+0xb0/0x b8 [1.667652] sp: ffff800011b9bbe0 [ 1.670959] x29: ffff800011b9bbe0 x28: 0000000000000000 [ 1.676267] x27: ffff800011448000 x26: ffff8000100cfd98 [ 1.681574] x25: ffff800011b9 bd48 x24: 0000000000000000 [ 1.686882] x23: 0000000000000000 x22: ffff8000106fad90 [ 1.692189] x21: 0000000000000000a x20: ffff0000c004850 0 [1,697496] x19: ffff0000c0048500 x18: ffffffffffffffff [ 1.702804] x17: 0000000000000000 x16: 00000000000000000 [ 1.708112] x15: ffff800011460300 x14: ffffffffffe000 0 [ 1.713420] x13: ffff8000114602d8 x12: 0720072007200720 [ 1.718727] x11: 0720072007200720 x10: 0720072007200720 [ 1.724035] x9 : ffff800 011b9bbe0 x8: ffff800011b9bbe0 [ 1.729342] x7: 0000000000000009 x6: ffff8000114b8328 [1.734649] x5: 0000000000000000 x4: 00000000000000000 [1.739956] x3: 00000000ffff ffff x2: ffff800011460298 [1.745263] x1: 1af1d7de276f4500 x0: 0000000000000000 [1.750572] Rastreo de llamadas: [1.753010] clk_core_disable+0xb0/0xb8 [ 1.756840] clk_core_disable_lock+0x24/0x40 [ 1.761105] clk_disable+0x20/0x30 [ 1.764501] mtk_iommu_runtime_suspend+0x88/0xa8 [ 1.769114] pm_generic_runtime_suspend+0x2c/0x48 [ 1 .773815] __rpm_callback+0xe0/0x178 [ 1.777559] rpm_callback+0x24/0x88 [ 1.781041] rpm_suspend+0xdc/0x470 [ 1.784523] rpm_idle+0x12c/0x170 [ 1.787831] pm_runtime_work+0xa8/0xc0 [ 1.791573] Process_one_work+0x1e8/0x360 [ 1.795580] trabajador_thread+0x44/0x478 [ 1.799237] kthread+0x150/0x158 [ 1.802460] ret_from_fork+ 0x10/0x30 [1.806034] ---[ final de seguimiento 82402920ef64573b ]--- [ 1.810728] ------------[ cortar aqu\u00ed ]------------ Adem\u00e1s , ahora no necesitamos habilitar el reloj desde la funci\u00f3n mtk_iommu_hw_init ya que ya est\u00e1 habilitado en el curr\u00edculum.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/iommu/mtk_iommu.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"c0b57581b73be7b43f39e0dff201c93413f6a668\",\"lessThan\":\"5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c0b57581b73be7b43f39e0dff201c93413f6a668\",\"lessThan\":\"b34ea31fe013569d42b7e8681ef3f717f77c5b72\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/iommu/mtk_iommu.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.12.4\",\"lessThanOrEqual\":\"5.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.13\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-02-28T20:32:44.249643Z\",\"id\":\"CVE-2021-47025\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12\",\"versionEndExcluding\":\"5.12.4\",\"matchCriteriaId\":\"D8C7052F-1B7B-4327-9C2B-84EBF3243838\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b34ea31fe013569d42b7e8681ef3f717f77c5b72\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b34ea31fe013569d42b7e8681ef3f717f77c5b72\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T14:17:39+00:00",
"cve": "CVE-2021-47025",
"id": "CVE-2021-47025",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_affected": "42",
"product_status:known_not_affected": "156",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: iommu/mediatek: Always enable the clk on resume",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47025.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b34ea31fe013569d42b7e8681ef3f717f77c5b72\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:24:39.248Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47025\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-02-28T20:32:44.249643Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:13.825Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"iommu/mediatek: Always enable the clk on resume\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"c0b57581b73be7b43f39e0dff201c93413f6a668\", \"lessThan\": \"5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c0b57581b73be7b43f39e0dff201c93413f6a668\", \"lessThan\": \"b34ea31fe013569d42b7e8681ef3f717f77c5b72\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/iommu/mtk_iommu.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.12.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/iommu/mtk_iommu.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca\"}, {\"url\": \"https://git.kernel.org/stable/c/b34ea31fe013569d42b7e8681ef3f717f77c5b72\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu/mediatek: Always enable the clk on resume\\n\\nIn mtk_iommu_runtime_resume always enable the clk, even\\nif m4u_dom is null. Otherwise the \u0027suspend\u0027 cb might\\ndisable the clk which is already disabled causing the warning:\\n\\n[ 1.586104] infra_m4u already disabled\\n[ 1.586133] WARNING: CPU: 0 PID: 121 at drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8\\n[ 1.594391] mtk-iommu 10205000.iommu: bound 18001000.larb (ops mtk_smi_larb_component_ops)\\n[ 1.598108] Modules linked in:\\n[ 1.598114] CPU: 0 PID: 121 Comm: kworker/0:2 Not tainted 5.12.0-rc5 #69\\n[ 1.609246] mtk-iommu 10205000.iommu: bound 14027000.larb (ops mtk_smi_larb_component_ops)\\n[ 1.617487] Hardware name: Google Elm (DT)\\n[ 1.617491] Workqueue: pm pm_runtime_work\\n[ 1.620545] mtk-iommu 10205000.iommu: bound 19001000.larb (ops mtk_smi_larb_component_ops)\\n\\n[ 1.627229] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--)\\n[ 1.659297] pc : clk_core_disable+0xb0/0xb8\\n[ 1.663475] lr : clk_core_disable+0xb0/0xb8\\n[ 1.667652] sp : ffff800011b9bbe0\\n[ 1.670959] x29: ffff800011b9bbe0 x28: 0000000000000000\\n[ 1.676267] x27: ffff800011448000 x26: ffff8000100cfd98\\n[ 1.681574] x25: ffff800011b9bd48 x24: 0000000000000000\\n[ 1.686882] x23: 0000000000000000 x22: ffff8000106fad90\\n[ 1.692189] x21: 000000000000000a x20: ffff0000c0048500\\n[ 1.697496] x19: ffff0000c0048500 x18: ffffffffffffffff\\n[ 1.702804] x17: 0000000000000000 x16: 0000000000000000\\n[ 1.708112] x15: ffff800011460300 x14: fffffffffffe0000\\n[ 1.713420] x13: ffff8000114602d8 x12: 0720072007200720\\n[ 1.718727] x11: 0720072007200720 x10: 0720072007200720\\n[ 1.724035] x9 : ffff800011b9bbe0 x8 : ffff800011b9bbe0\\n[ 1.729342] x7 : 0000000000000009 x6 : ffff8000114b8328\\n[ 1.734649] x5 : 0000000000000000 x4 : 0000000000000000\\n[ 1.739956] x3 : 00000000ffffffff x2 : ffff800011460298\\n[ 1.745263] x1 : 1af1d7de276f4500 x0 : 0000000000000000\\n[ 1.750572] Call trace:\\n[ 1.753010] clk_core_disable+0xb0/0xb8\\n[ 1.756840] clk_core_disable_lock+0x24/0x40\\n[ 1.761105] clk_disable+0x20/0x30\\n[ 1.764501] mtk_iommu_runtime_suspend+0x88/0xa8\\n[ 1.769114] pm_generic_runtime_suspend+0x2c/0x48\\n[ 1.773815] __rpm_callback+0xe0/0x178\\n[ 1.777559] rpm_callback+0x24/0x88\\n[ 1.781041] rpm_suspend+0xdc/0x470\\n[ 1.784523] rpm_idle+0x12c/0x170\\n[ 1.787831] pm_runtime_work+0xa8/0xc0\\n[ 1.791573] process_one_work+0x1e8/0x360\\n[ 1.795580] worker_thread+0x44/0x478\\n[ 1.799237] kthread+0x150/0x158\\n[ 1.802460] ret_from_fork+0x10/0x30\\n[ 1.806034] ---[ end trace 82402920ef64573b ]---\\n[ 1.810728] ------------[ cut here ]------------\\n\\nIn addition, we now don\u0027t need to enable the clock from the\\nfunction mtk_iommu_hw_init since it is already enabled by the resume.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12.4\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.13\", \"versionStartIncluding\": \"5.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T13:46:30.333Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2021-47025\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T13:46:30.333Z\", \"dateReserved\": \"2024-02-27T18:42:55.960Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-28T08:13:37.122Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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