CVE-2021-47364

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It allocates memory to\ntemporarily hold an array of `struct comedi_insn` converted from the\n32-bit version in user space. This memory is only being freed if there\nis a fault while filling the array, otherwise it is leaked.\n\nAdd a call to `kfree()` to fix the leak."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: comedi: Reparar p\u00e9rdida de memoria en compat_insnlist() `compat_insnlist()` maneja la versi\u00f3n de 32 bits del ioctl `COMEDI_INSNLIST` (cuando `CONFIG_COMPAT` est\u00e1 habilitado). Asigna memoria para almacenar temporalmente una matriz de `struct comedi_insn` convertida desde la versi\u00f3n de 32 bits en el espacio de usuario. Esta memoria solo se libera si hay una falla al llenar la matriz; de lo contrario, se pierde. Agregue una llamada a `kfree()` para solucionar la fuga."}], "id": "CVE-2021-47364", "lastModified": "2026-06-17T04:17:17.983", "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-2021-47364", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-05-23T18:02:02.368572Z", "version": "2.0.3"}}]}, "published": "2024-05-21T15:15:22.497", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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