CVE-2021-46906

{"id": "CVE-2021-46906", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-02-26T18:15:07.160", "references": [{"url": "https://git.kernel.org/stable/c/0e280502be1b003c3483ae03fc60dea554fcfa82", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/21883bff0fd854e07429a773ff18f1e9658f50e8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/41b1e71a2c57366b08dcca1a28b0d45ca69429ce", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6be388f4a35d2ce5ef7dbf635a8964a5da7f799f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7f5a4b24cdbd7372770a02f23e347d7d9a9ac8f1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8c064eece9a51856f3f275104520c7e3017fc5c0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b1e3596416d74ce95cc0b7b38472329a3818f8a9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c5d3c142f2d57d40c55e65d5622d319125a45366", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-668"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: usbhid: fix info leak in hid_submit_ctrl\n\nIn hid_submit_ctrl(), the way of calculating the report length doesn't\ntake into account that report->size can be zero. When running the\nsyzkaller reproducer, a report of size 0 causes hid_submit_ctrl) to\ncalculate transfer_buffer_length as 16384. When this urb is passed to\nthe usb core layer, KMSAN reports an info leak of 16384 bytes.\n\nTo fix this, first modify hid_report_len() to account for the zero\nreport size case by using DIV_ROUND_UP for the division. Then, call it\nfrom hid_submit_ctrl()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: HID: usbhid: corrige fuga de informaci\u00f3n en hid_submit_ctrl En hid_submit_ctrl(), la forma de calcular la longitud del informe no tiene en cuenta que el tama\u00f1o del informe->puede ser cero. Cuando se ejecuta el reproductor syzkaller, un informe de tama\u00f1o 0 hace que hid_submit_ctrl) calcule transfer_buffer_length como 16384. Cuando esta urb se pasa a la capa central USB, KMSAN informa una fuga de informaci\u00f3n de 16384 bytes. Para solucionar este problema, primero modifique hid_report_len() para tener en cuenta el caso de tama\u00f1o de informe cero utilizando DIV_ROUND_UP para la divisi\u00f3n. Luego, ll\u00e1malo desde hid_submit_ctrl()."}], "lastModified": "2024-04-17T17:28:34.403", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D3914458-19C3-4C3A-BDE5-1709DBA9D80E", "versionEndExcluding": "4.4.274"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4DCA3ED7-1EE2-4D08-97C9-09557F3C128B", "versionEndExcluding": "4.9.274", "versionStartIncluding": "4.5.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D5A94E6B-B6AC-4702-BDDD-51C5530BC3BD", "versionEndExcluding": "4.14.238", "versionStartIncluding": "4.10.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "61AC89B5-56F8-45EC-A99A-3C21BEC35859", "versionEndExcluding": "4.19.196", "versionStartIncluding": "4.15.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1ACDB254-670C-4C45-A321-19F8F0B06855", "versionEndExcluding": "5.4.127", "versionStartIncluding": "4.20.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6AB23D75-98DB-4DF5-801A-7B67A374B39C", "versionEndExcluding": "5.10.45", "versionStartIncluding": "5.5.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0C3B9465-86FD-4C31-8323-6D4375B62AA4", "versionEndExcluding": "5.12.12", "versionStartIncluding": "5.11.0"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}