CVE-2024-45027

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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."}], "id": "CVE-2024-45027", "lastModified": "2026-06-17T07:53:27.010", "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-2024-45027", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-29T15:46:24.531317Z", "version": "2.0.3"}}]}, "published": "2024-09-11T16:15:07.570", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3efb29f6a78d4746f958c1ab6cd7981c5762f03b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/770cacc75b0091ece17349195d72133912c1ca7c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dcdb52d948f3a17ccd3fce757d9bd981d7c32039"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-459"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()", "id": "2311724", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2311724"}, "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"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nusb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()\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.\nGate the interrupt freeing loop with a check on xhci->interrupters\nbeing non-NULL.\nFound while debugging a DMA allocation issue that led the XHCI driver\non this exact path."], "name": "CVE-2024-45027", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-09-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-45027\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-45027\nhttps://lore.kernel.org/linux-cve-announce/2024091110-CVE-2024-45027-95b9@gregkh/T"], "threat_severity": "Low"}

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