CVE-2021-47042

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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/296443139f893b554dddd56a99ba8471ab5802d4", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/616cf23b6cf40ad6f03ffbddfa1b6c4eb68d8ae1", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.499Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47042", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:57:44.782253Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:12.701Z"}}], "cna": {"title": "drm/amd/display: Free local data after use", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3a00c04212d1cfe1426338b78f4ead623508c874", "lessThan": "296443139f893b554dddd56a99ba8471ab5802d4", "versionType": "git"}, {"status": "affected", "version": "3a00c04212d1cfe1426338b78f4ead623508c874", "lessThan": "616cf23b6cf40ad6f03ffbddfa1b6c4eb68d8ae1", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/amd/display/dc/core/dc_link.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/gpu/drm/amd/display/dc/core/dc_link.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/296443139f893b554dddd56a99ba8471ab5802d4"}, {"url": "https://git.kernel.org/stable/c/616cf23b6cf40ad6f03ffbddfa1b6c4eb68d8ae1"}], "x_generator": {"engine": "bippy-1.2.0"}, "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[<000000000bdf5c4a>] kmem_cache_alloc_trace+0x30a/0x4a0\n[<00000000e7c59f0e>] link_create+0xce/0xac0 [amdgpu]\n[<000000002fb6c072>] dc_create+0x370/0x720 [amdgpu]\n[<000000000094d1f3>] amdgpu_dm_init+0x18e/0x17a0 [amdgpu]\n[<00000000bec048fd>] dm_hw_init+0x12/0x20 [amdgpu]\n[<00000000a2bb7cf6>] amdgpu_device_init+0x1463/0x1e60 [amdgpu]\n[<0000000032d3bb13>] amdgpu_driver_load_kms+0x5b/0x330 [amdgpu]\n[<00000000a27834f9>] amdgpu_pci_probe+0x192/0x280 [amdgpu]\n[<00000000fec7d291>] local_pci_probe+0x47/0xa0\n[<0000000055dbbfa7>] pci_device_probe+0xe3/0x180\n[<00000000815da970>] really_probe+0x1c4/0x4e0\n[<00000000b4b6974b>] driver_probe_device+0x62/0x150\n[<000000000f9ecc61>] device_driver_attach+0x58/0x60\n[<000000000f65c843>] __driver_attach+0xd6/0x150\n[<000000002f5e3683>] bus_for_each_dev+0x6a/0xc0\n[<00000000a1cfc897>] driver_attach+0x1e/0x20"}], "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": "2026-05-11T13:46:50.069Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47042", "state": "PUBLISHED", "dateUpdated": "2026-05-11T13:46:50.069Z", "dateReserved": "2024-02-27T18:42:55.969Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-02-28T08:13:47.809Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/dc/core/dc_link.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "296443139f893b554dddd56a99ba8471ab5802d4", "status": "affected", "version": "3a00c04212d1cfe1426338b78f4ead623508c874", "versionType": "git"}, {"lessThan": "616cf23b6cf40ad6f03ffbddfa1b6c4eb68d8ae1", "status": "affected", "version": "3a00c04212d1cfe1426338b78f4ead623508c874", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/dc/core/dc_link.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.12"}, {"lessThan": "5.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.12.*", "status": "unaffected", "version": "5.12.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8C7052F-1B7B-4327-9C2B-84EBF3243838", "versionEndExcluding": "5.12.4", "versionStartIncluding": "5.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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[<000000000bdf5c4a>] kmem_cache_alloc_trace+0x30a/0x4a0\n[<00000000e7c59f0e>] link_create+0xce/0xac0 [amdgpu]\n[<000000002fb6c072>] dc_create+0x370/0x720 [amdgpu]\n[<000000000094d1f3>] amdgpu_dm_init+0x18e/0x17a0 [amdgpu]\n[<00000000bec048fd>] dm_hw_init+0x12/0x20 [amdgpu]\n[<00000000a2bb7cf6>] amdgpu_device_init+0x1463/0x1e60 [amdgpu]\n[<0000000032d3bb13>] amdgpu_driver_load_kms+0x5b/0x330 [amdgpu]\n[<00000000a27834f9>] amdgpu_pci_probe+0x192/0x280 [amdgpu]\n[<00000000fec7d291>] local_pci_probe+0x47/0xa0\n[<0000000055dbbfa7>] pci_device_probe+0xe3/0x180\n[<00000000815da970>] really_probe+0x1c4/0x4e0\n[<00000000b4b6974b>] driver_probe_device+0x62/0x150\n[<000000000f9ecc61>] device_driver_attach+0x58/0x60\n[<000000000f65c843>] __driver_attach+0xd6/0x150\n[<000000002f5e3683>] bus_for_each_dev+0x6a/0xc0\n[<00000000a1cfc897>] 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: [&lt;000000000bdf5c4a&gt;] kmem_cache_alloc_trace+0x30a/0x4a0 [&lt;00000000e7c59f0e&gt;] link_create+0xce/0xac0 [amdgpu] [&lt;000000002fb6c072&gt;] dc_create+0x370/0x720 [amdgpu] [&lt;000000000094d1f3&gt;] amdgpu_dm_init+0x18e/0x17a0 [amdgpu] [&lt;00000000bec048fd&gt;] dm_hw_in es+0x12/0x20 [amdgpu] [&lt;00000000a2bb7cf6&gt;] amdgpu_device_init+0x1463 /0x1e60 [amdgpu] [&lt;0000000032d3bb13&gt;] amdgpu_driver_load_kms+0x5b/0x330 [amdgpu] [&lt;00000000a27834f9&gt;] amdgpu_pci_probe+0x192/0x280 [amdgpu] [&lt;00000000fec7d29 1&gt;] local_pci_probe+0x47/0xa0 [&lt;0000000055dbbfa7&gt;] pci_device_probe+0xe3/ 0x180 [&lt;00000000815da970&gt;] very_probe+0x1c4/0x4e0 [&lt;00000000b4b6974b&gt;] driver_probe_device+0x62/0x150 [&lt;000000000f9ecc61&gt;] device_driver_attach+0x58/0x60 [&lt;0000000 00f65c843&gt;] __driver_attach+0xd6/0x150 [&lt;000000002f5e3683&gt;] bus_for_each_dev+0x6a/ 0xc0 [&lt;00000000a1cfc897&gt;] controlador_attach+0x1e/0x20"}], "id": "CVE-2021-47042", "lastModified": "2026-06-17T04:16:17.290", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47042", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T15:57:44.782253Z", "version": "2.0.3"}}]}, "published": "2024-02-28T09:15:40.083", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "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": "af854a3a-2127-422b-91ae-364da2661108", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: drm/amd/display: Free local data after use", "id": "2267008", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2267008"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-402", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amd/display: Free local data after use\nFixes the following memory leak in dc_link_construct():\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[<000000000bdf5c4a>] kmem_cache_alloc_trace+0x30a/0x4a0\n[<00000000e7c59f0e>] link_create+0xce/0xac0 [amdgpu]\n[<000000002fb6c072>] dc_create+0x370/0x720 [amdgpu]\n[<000000000094d1f3>] amdgpu_dm_init+0x18e/0x17a0 [amdgpu]\n[<00000000bec048fd>] dm_hw_init+0x12/0x20 [amdgpu]\n[<00000000a2bb7cf6>] amdgpu_device_init+0x1463/0x1e60 [amdgpu]\n[<0000000032d3bb13>] amdgpu_driver_load_kms+0x5b/0x330 [amdgpu]\n[<00000000a27834f9>] amdgpu_pci_probe+0x192/0x280 [amdgpu]\n[<00000000fec7d291>] local_pci_probe+0x47/0xa0\n[<0000000055dbbfa7>] pci_device_probe+0xe3/0x180\n[<00000000815da970>] really_probe+0x1c4/0x4e0\n[<00000000b4b6974b>] driver_probe_device+0x62/0x150\n[<000000000f9ecc61>] device_driver_attach+0x58/0x60\n[<000000000f65c843>] __driver_attach+0xd6/0x150\n[<000000002f5e3683>] bus_for_each_dev+0x6a/0xc0\n[<00000000a1cfc897>] driver_attach+0x1e/0x20"], "name": "CVE-2021-47042", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-02-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47042\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47042\nhttps://lore.kernel.org/linux-cve-announce/2024022838-CVE-2021-47042-142d@gregkh/T/#u"], "threat_severity": "Low"}

{}