cve-2021-47042
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2024-12-19 07:34
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Free local data after use Fixes the following memory leak in dc_link_construct(): unreferenced object 0xffffa03e81471400 (size 1024): comm "amd_module_load", pid 2486, jiffies 4294946026 (age 10.544s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000000bdf5c4a>] kmem_cache_alloc_trace+0x30a/0x4a0 [<00000000e7c59f0e>] link_create+0xce/0xac0 [amdgpu] [<000000002fb6c072>] dc_create+0x370/0x720 [amdgpu] [<000000000094d1f3>] amdgpu_dm_init+0x18e/0x17a0 [amdgpu] [<00000000bec048fd>] dm_hw_init+0x12/0x20 [amdgpu] [<00000000a2bb7cf6>] amdgpu_device_init+0x1463/0x1e60 [amdgpu] [<0000000032d3bb13>] amdgpu_driver_load_kms+0x5b/0x330 [amdgpu] [<00000000a27834f9>] amdgpu_pci_probe+0x192/0x280 [amdgpu] [<00000000fec7d291>] local_pci_probe+0x47/0xa0 [<0000000055dbbfa7>] pci_device_probe+0xe3/0x180 [<00000000815da970>] really_probe+0x1c4/0x4e0 [<00000000b4b6974b>] driver_probe_device+0x62/0x150 [<000000000f9ecc61>] device_driver_attach+0x58/0x60 [<000000000f65c843>] __driver_attach+0xd6/0x150 [<000000002f5e3683>] bus_for_each_dev+0x6a/0xc0 [<00000000a1cfc897>] driver_attach+0x1e/0x20
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/296443139f893b554dddd56a99ba8471ab5802d4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/616cf23b6cf40ad6f03ffbddfa1b6c4eb68d8ae1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/296443139f893b554dddd56a99ba8471ab5802d4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/616cf23b6cf40ad6f03ffbddfa1b6c4eb68d8ae1Patch
Impacted products
Vendor Product Version
Linux Linux Version: 5.12
Show details on NVD website

To clipboard 

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        "metrics": [
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              "content": {
                "id": "CVE-2021-47042",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
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                    "Technical Impact": "partial"
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                "timestamp": "2024-09-10T15:57:44.782253Z",
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          "shortName": "CISA-ADP"
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    "cna": {
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          "product": "Linux",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Free local data after use\n\nFixes the following memory leak in dc_link_construct():\n\nunreferenced object 0xffffa03e81471400 (size 1024):\ncomm \"amd_module_load\", pid 2486, jiffies 4294946026 (age 10.544s)\nhex dump (first 32 bytes):\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\nbacktrace:\n[\u003c000000000bdf5c4a\u003e] kmem_cache_alloc_trace+0x30a/0x4a0\n[\u003c00000000e7c59f0e\u003e] link_create+0xce/0xac0 [amdgpu]\n[\u003c000000002fb6c072\u003e] dc_create+0x370/0x720 [amdgpu]\n[\u003c000000000094d1f3\u003e] amdgpu_dm_init+0x18e/0x17a0 [amdgpu]\n[\u003c00000000bec048fd\u003e] dm_hw_init+0x12/0x20 [amdgpu]\n[\u003c00000000a2bb7cf6\u003e] amdgpu_device_init+0x1463/0x1e60 [amdgpu]\n[\u003c0000000032d3bb13\u003e] amdgpu_driver_load_kms+0x5b/0x330 [amdgpu]\n[\u003c00000000a27834f9\u003e] amdgpu_pci_probe+0x192/0x280 [amdgpu]\n[\u003c00000000fec7d291\u003e] local_pci_probe+0x47/0xa0\n[\u003c0000000055dbbfa7\u003e] pci_device_probe+0xe3/0x180\n[\u003c00000000815da970\u003e] really_probe+0x1c4/0x4e0\n[\u003c00000000b4b6974b\u003e] driver_probe_device+0x62/0x150\n[\u003c000000000f9ecc61\u003e] device_driver_attach+0x58/0x60\n[\u003c000000000f65c843\u003e] __driver_attach+0xd6/0x150\n[\u003c000000002f5e3683\u003e] bus_for_each_dev+0x6a/0xc0\n[\u003c00000000a1cfc897\u003e] driver_attach+0x1e/0x20"
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      "providerMetadata": {
        "dateUpdated": "2024-12-19T07:34:09.631Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "title": "drm/amd/display: Free local data after use",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47042",
    "datePublished": "2024-02-28T08:13:47.809Z",
    "dateReserved": "2024-02-27T18:42:55.969Z",
    "dateUpdated": "2024-12-19T07:34:09.631Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47042\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:40.083\",\"lastModified\":\"2024-12-06T18:41:24.943\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amd/display: Free local data after use\\n\\nFixes the following memory leak in dc_link_construct():\\n\\nunreferenced object 0xffffa03e81471400 (size 1024):\\ncomm \\\"amd_module_load\\\", pid 2486, jiffies 4294946026 (age 10.544s)\\nhex dump (first 32 bytes):\\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\\nbacktrace:\\n[\u003c000000000bdf5c4a\u003e] kmem_cache_alloc_trace+0x30a/0x4a0\\n[\u003c00000000e7c59f0e\u003e] link_create+0xce/0xac0 [amdgpu]\\n[\u003c000000002fb6c072\u003e] dc_create+0x370/0x720 [amdgpu]\\n[\u003c000000000094d1f3\u003e] amdgpu_dm_init+0x18e/0x17a0 [amdgpu]\\n[\u003c00000000bec048fd\u003e] dm_hw_init+0x12/0x20 [amdgpu]\\n[\u003c00000000a2bb7cf6\u003e] amdgpu_device_init+0x1463/0x1e60 [amdgpu]\\n[\u003c0000000032d3bb13\u003e] amdgpu_driver_load_kms+0x5b/0x330 [amdgpu]\\n[\u003c00000000a27834f9\u003e] amdgpu_pci_probe+0x192/0x280 [amdgpu]\\n[\u003c00000000fec7d291\u003e] local_pci_probe+0x47/0xa0\\n[\u003c0000000055dbbfa7\u003e] pci_device_probe+0xe3/0x180\\n[\u003c00000000815da970\u003e] really_probe+0x1c4/0x4e0\\n[\u003c00000000b4b6974b\u003e] driver_probe_device+0x62/0x150\\n[\u003c000000000f9ecc61\u003e] device_driver_attach+0x58/0x60\\n[\u003c000000000f65c843\u003e] __driver_attach+0xd6/0x150\\n[\u003c000000002f5e3683\u003e] bus_for_each_dev+0x6a/0xc0\\n[\u003c00000000a1cfc897\u003e] driver_attach+0x1e/0x20\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: datos locales gratuitos despu\u00e9s de su uso. Corrige la siguiente p\u00e9rdida de memoria en dc_link_construct(): objeto sin referencia 0xffffa03e81471400 (tama\u00f1o 1024): comm \\\"amd_module_load\\\", pid 2486, jiffies 4294946026 (edad 10,544 s) volcado hexadecimal (primeros 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ retroceso: [\u0026lt;000000000bdf5c4a\u0026gt;] kmem_cache_alloc_trace+0x30a/0x4a0 [\u0026lt;00000000e7c59f0e\u0026gt;] link_create+0xce/0xac0 [amdgpu] [\u0026lt;000000002fb6c072\u0026gt;] dc_create+0x370/0x720 [amdgpu] [\u0026lt;000000000094d1f3\u0026gt;] amdgpu_dm_init+0x18e/0x17a0 [amdgpu] [\u0026lt;00000000bec048fd\u0026gt;] dm_hw_in es+0x12/0x20 [amdgpu] [\u0026lt;00000000a2bb7cf6\u0026gt;] amdgpu_device_init+0x1463 /0x1e60 [amdgpu] [\u0026lt;0000000032d3bb13\u0026gt;] amdgpu_driver_load_kms+0x5b/0x330 [amdgpu] [\u0026lt;00000000a27834f9\u0026gt;] amdgpu_pci_probe+0x192/0x280 [amdgpu] [\u0026lt;00000000fec7d29 1\u0026gt;] local_pci_probe+0x47/0xa0 [\u0026lt;0000000055dbbfa7\u0026gt;] pci_device_probe+0xe3/ 0x180 [\u0026lt;00000000815da970\u0026gt;] very_probe+0x1c4/0x4e0 [\u0026lt;00000000b4b6974b\u0026gt;] driver_probe_device+0x62/0x150 [\u0026lt;000000000f9ecc61\u0026gt;] device_driver_attach+0x58/0x60 [\u0026lt;0000000 00f65c843\u0026gt;] __driver_attach+0xd6/0x150 [\u0026lt;000000002f5e3683\u0026gt;] bus_for_each_dev+0x6a/ 0xc0 [\u0026lt;00000000a1cfc897\u0026gt;] controlador_attach+0x1e/0x20\"}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"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/296443139f893b554dddd56a99ba8471ab5802d4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/616cf23b6cf40ad6f03ffbddfa1b6c4eb68d8ae1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/296443139f893b554dddd56a99ba8471ab5802d4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/616cf23b6cf40ad6f03ffbddfa1b6c4eb68d8ae1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}"
  }
}


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