CVE-2021-47239

{"id": "CVE-2021-47239", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-05-21T15:15:13.100", "references": [{"url": "https://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: fix possible use-after-free in smsc75xx_bind\n\nThe commit 46a8b29c6306 (\"net: usb: fix memory leak in smsc75xx_bind\")\nfails to clean up the work scheduled in smsc75xx_reset->\nsmsc75xx_set_multicast, which leads to use-after-free if the work is\nscheduled to start after the deallocation. In addition, this patch\nalso removes a dangling pointer - dev->data[0].\n\nThis patch calls cancel_work_sync to cancel the scheduled work and set\nthe dangling pointer to NULL."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net:usb: corrige posible use after free en smsc75xx_bind. La confirmaci\u00f3n 46a8b29c6306 (\"net:usb: corrige la p\u00e9rdida de memoria en smsc75xx_bind\") no logra limpiar el trabajo programado en smsc75xx_reset -> smsc75xx_set_multicast, lo que genera use after free si el trabajo est\u00e1 programado para comenzar despu\u00e9s de la desasignaci\u00f3n. Adem\u00e1s, este parche tambi\u00e9n elimina un puntero colgante: dev->data[0]. Este parche llama a cancel_work_sync para cancelar el trabajo programado y establecer el puntero colgante en NULL."}], "lastModified": "2024-12-30T19:05:15.167", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "737AAC58-BB4E-47DF-AC5F-FA6F3A7A1103", "versionEndExcluding": "4.4.274", "versionStartIncluding": "4.4.271"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8C445B8A-4E12-47FB-8627-E8B96B9579D0", "versionEndExcluding": "4.9.274", "versionStartIncluding": "4.9.271"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BCBDE75C-DF50-4E70-B1D1-A20BD3099318", "versionEndExcluding": "4.14.238", "versionStartIncluding": "4.14.235"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E6000807-8020-4E7C-A445-BAF2F14A52A1", "versionEndExcluding": "4.19.196", "versionStartIncluding": "4.19.193"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6DBC83E0-6B98-400C-9F10-299D808706FB", "versionEndExcluding": "5.4.128", "versionStartIncluding": "5.4.124"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F9F66318-6AFC-40FF-A36E-F936221016D7", "versionEndExcluding": "5.10.46", "versionStartIncluding": "5.10.42"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7AA02305-D22E-49CF-8F2A-272D97B16E7C", "versionEndExcluding": "5.12.13", "versionStartIncluding": "5.12.9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}