CVE-2024-45027

{"id": "CVE-2024-45027", "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:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-09-11T16:15:07.570", "references": [{"url": "https://git.kernel.org/stable/c/770cacc75b0091ece17349195d72133912c1ca7c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dcdb52d948f3a17ccd3fce757d9bd981d7c32039", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-459"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()\n\nIf xhci_mem_init() fails, it calls into xhci_mem_cleanup() to mop\nup the damage. If it fails early enough, before xhci->interrupters\nis allocated but after xhci->max_interrupters has been set, which\nhappens in most (all?) cases, things get uglier, as xhci_mem_cleanup()\nunconditionally derefences xhci->interrupters. With prejudice.\n\nGate the interrupt freeing loop with a check on xhci->interrupters\nbeing non-NULL.\n\nFound while debugging a DMA allocation issue that led the XHCI driver\non this exact path."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: xhci: Comprueba que xhci->interrupters se asignen en xhci_mem_clearup() Si xhci_mem_init() falla, llama a xhci_mem_cleanup() para limpiar el da\u00f1o. Si falla lo suficientemente pronto, antes de que se asigne xhci->interrupters pero despu\u00e9s de que se haya establecido xhci->max_interrupters, lo que sucede en la mayor\u00eda (\u00bftodos?) de los casos, las cosas se ponen peor, ya que xhci_mem_cleanup() desreferencia incondicionalmente a xhci->interrupters. Con prejuicio. Bloquea el bucle de liberaci\u00f3n de interrupciones con una comprobaci\u00f3n de que xhci->interrupters no sea NULL. Se encontr\u00f3 mientras se depuraba un problema de asignaci\u00f3n de DMA que llev\u00f3 al controlador XHCI por este camino exacto."}], "lastModified": "2024-09-13T16:29:44.213", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E89DCAFA-7226-4A61-B500-1229E533B4BD", "versionEndExcluding": "6.10.7", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8B3CE743-2126-47A3-8B7C-822B502CF119"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4DEB27E7-30AA-45CC-8934-B89263EF3551"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0005AEF-856E-47EB-BFE4-90C46899394D"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}