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and rx buffers are of equal size or a malicious device could overflow\nthe slab-allocated receive buffer when doing bulk transfers."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: comedi: vmk80xx: corrige el desbordamiento masivo del b\u00fafer El controlador utiliza b\u00faferes del tama\u00f1o de un endpoint, pero no debe asumir que los b\u00faferes tx y rx son del mismo tama\u00f1o o un dispositivo malicioso podr\u00eda desbordar el b\u00fafer de recepci\u00f3n asignado por losa al realizar transferencias masivas."}], "id": "CVE-2021-47474", "lastModified": "2025-09-24T18:51:48.063", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": 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"416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7b0e356189327287d0eb98ec081bd6dd97068cd3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7cfb35db607760698d299fd1cf7402dfa8f09973"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b7fd7f3387f070215e6be341e68eb5c087eeecc0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e0e6a63fd97ad95fe05dfd77268a1952551e11a7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/063f576c43d589a4c153554b681d32b3f8317c7b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0866dcaa828c21bc2f94dac00e086078f11b5772"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1ae4715121a57bc6fa29fd992127b01907f2f993"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/47b4636ebdbeba2044b3db937c4d2b6a4fe3d0f2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/78cdfd62bd54af615fba9e3ca1ba35de39d3871d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7b0e356189327287d0eb98ec081bd6dd97068cd3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7cfb35db607760698d299fd1cf7402dfa8f09973"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b7fd7f3387f070215e6be341e68eb5c087eeecc0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e0e6a63fd97ad95fe05dfd77268a1952551e11a7"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: comedi: vmk80xx: fix bulk-buffer overflow", "id": "2282949", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282949"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H", "status": "draft"}, "cwe": "CWE-119", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncomedi: vmk80xx: fix bulk-buffer overflow\nThe driver is using endpoint-sized buffers but must not assume that the\ntx and rx buffers are of equal size or a malicious device could overflow\nthe slab-allocated receive buffer when doing bulk transfers.", "A flaw was found in the vmk80xx module in the Linux kernel. A malicious device can overflow the slab-allocated receive buffer when doing bulk transfers, resulting in a denial of service."], "name": "CVE-2021-47474", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "2024-05-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47474\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47474\nhttps://lore.kernel.org/linux-cve-announce/2024052233-CVE-2021-47474-7185@gregkh/T"], "statement": "The vmk80xx module is not built in the kernel shipped in Red Hat Enterprise Linux, so it is not affected by this vulnerability.", "threat_severity": "Moderate"}

{"created": "2025-07-12T23:05:49.814280+00:00", "updated": "2025-07-12T23:05:49.814326+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}