{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47642", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:48:21.519Z", "datePublished": "2025-02-26T01:54:13.193Z", "dateUpdated": "2025-05-04T07:15:22.072Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:15:22.072Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow\n\nCoverity complains of a possible buffer overflow. 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However,\ngiven the 'static' scope of nvidia_setup_i2c_bus() it looks\nlike that can't happen after examiniing the call sites.\n\nCID 19036 (#1 of 1): Copy into fixed size buffer (STRING_OVERFLOW)\n1. fixed_size_dest: You might overrun the 48-character fixed-size string\n chan->adapter.name by copying name without checking the length.\n2. parameter_as_source: Note: This defect has an elevated risk because the\n source argument is a parameter of the current function.\n 89 strcpy(chan->adapter.name, name);\n\nFix this warning by using strscpy() which will silence the warning and\nprevent any future buffer overflows should the names used to identify the\nchannel become much longer."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: video: fbdev: nvidiafb: Use strscpy() para evitar el desbordamiento del b\u00fafer Coverity se queja de un posible desbordamiento del b\u00fafer. Sin embargo, dado el alcance 'est\u00e1tico' de nvidia_setup_i2c_bus(), parece que eso no puede suceder despu\u00e9s de examinar los sitios de llamada. CID 19036 (#1 de 1): Copiar en un b\u00fafer de tama\u00f1o fijo (STRING_OVERFLOW) 1. fixed_size_dest: Puede desbordar la cadena de tama\u00f1o fijo de 48 caracteres chan->adapter.name copiando name sin verificar la longitud. 2. parameter_as_source: Nota: Este defecto tiene un riesgo elevado porque el argumento source es un par\u00e1metro de la funci\u00f3n actual. 89 strcpy(chan->adapter.name, name); Corrija esta advertencia usando strscpy() que silenciar\u00e1 la advertencia y evitar\u00e1 futuros desbordamientos del b\u00fafer si los nombres utilizados para identificar el canal se vuelven mucho m\u00e1s largos."}], "id": "CVE-2021-47642", "lastModified": "2025-09-23T18:46:15.617", "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": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-02-26T06:37:05.993", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/055cdd2e7b992921424d4daaa285ced787fb205f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/08dff482012758935c185532b1ad7d584785a86e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/37a1a2e6eeeb101285cd34e12e48a881524701aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/41baa86b6c802cdc6ab8ff2d46c083c9be93de81"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/47e5533adf118afaf06d25a3e2aaaab89371b1c5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/580e5d3815474b8349250c25c16416585a72c7fe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6a5226e544ac043bb2d8dc1bfe8920d02282f7cd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/72dd5c46a152136712a55bf026a9aa8c1b12b60d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9ff2f7294ab0f011cd4d1b7dcd9a07d8fdf72834"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow", "id": "2347848", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347848"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nvideo: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow\nCoverity complains of a possible buffer overflow. However,\ngiven the 'static' scope of nvidia_setup_i2c_bus() it looks\nlike that can't happen after examiniing the call sites.\nCID 19036 (#1 of 1): Copy into fixed size buffer (STRING_OVERFLOW)\n1. fixed_size_dest: You might overrun the 48-character fixed-size string\nchan->adapter.name by copying name without checking the length.\n2. parameter_as_source: Note: This defect has an elevated risk because the\nsource argument is a parameter of the current function.\n89 strcpy(chan->adapter.name, name);\nFix this warning by using strscpy() which will silence the warning and\nprevent any future buffer overflows should the names used to identify the\nchannel become much longer."], "name": "CVE-2021-47642", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47642\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47642\nhttps://lore.kernel.org/linux-cve-announce/2025022647-CVE-2021-47642-ae1b@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-13T11:14:04.260343+00:00", "updated": "2025-07-13T11:14:04.260404+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}