CVE-2021-47025

{"id": "CVE-2021-47025", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-02-28T09:15:39.290", "references": [{"url": "https://git.kernel.org/stable/c/5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b34ea31fe013569d42b7e8681ef3f717f77c5b72", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/b34ea31fe013569d42b7e8681ef3f717f77c5b72", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"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: Always enable the clk on resume\n\nIn mtk_iommu_runtime_resume always enable the clk, even\nif m4u_dom is null. Otherwise the 'suspend' 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't 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 'suspender' 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."}], "lastModified": "2024-12-06T18:52:52.237", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D8C7052F-1B7B-4327-9C2B-84EBF3243838", "versionEndExcluding": "5.12.4", "versionStartIncluding": "5.12"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}