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As part of the\nremoval procedure, device_del() waits for all ongoing sysfs attribute\ncallbacks to complete. 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As part of the\nremoval procedure, device_del() waits for all ongoing sysfs attribute\ncallbacks to complete. But usb_deauthorize_interface() can't complete\nuntil the device lock has been released, and the lock won't be\nreleased until the removal has finished.\n\nThe mechanism provided by sysfs to prevent this kind of deadlock is\nto use the sysfs_break_active_protection() function, which tells sysfs\nnot to wait for the attribute callback.\n\nReported-and-tested by: Yue Sun <samsun1006219@gmail.com>\nReported by: xingwei lee <xrivendell7@gmail.com>"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: USB: core: corrige el punto muerto en usb_deauthorize_interface() Entre las rutinas de devoluci\u00f3n de llamada de archivos de atributos en drivers/usb/core/sysfs.c, la funci\u00f3n interface_authorized_store() es la \u00fanica que adquiere un bloqueo de dispositivo en un dispositivo antecesor: llama a usb_deauthorize_interface(), que bloquea el dispositivo USB principal de la interfaz. Esto conducir\u00e1 a un punto muerto si otro proceso ya posee ese bloqueo e intenta eliminar la interfaz, ya sea mediante un cambio de configuraci\u00f3n o porque el dispositivo se ha desconectado. Como parte del procedimiento de eliminaci\u00f3n, device_del() espera a que se completen todas las devoluciones de llamadas de atributos sysfs en curso. Pero usb_deauthorize_interface() no se puede completar hasta que se haya liberado el bloqueo del dispositivo, y el bloqueo no se liberar\u00e1 hasta que haya finalizado la eliminaci\u00f3n. El mecanismo proporcionado por sysfs para evitar este tipo de punto muerto es utilizar la funci\u00f3n sysfs_break_active_protection(), que le dice a sysfs que no espere la devoluci\u00f3n de llamada del atributo. Reportado y probado por: Yue Sun Reportado por: xingwei lee "}], "id": "CVE-2024-26934", "lastModified": "2024-06-27T13:15:57.133", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-05-01T06:15:08.090", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/07acf979da33c721357ff27129edf74c23c036c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/122a06f1068bf5e39089863f4f60b1f5d4273384"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/12d6a5681a0a5cecc2af7860f0a1613fa7c6e947"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1b175bc579f46520b11ecda443bcd2ee4904f66a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/80ba43e9f799cbdd83842fc27db667289b3150f5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8cbdd324b41528994027128207fae8100dff094f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ab062fa3dc69aea88fe62162c5881ba14b50ecc5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dbdf66250d2d33e8b27352fcb901de79f3521057"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e451709573f8be904a8a72d0775bf114d7c291d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:3627", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:3618", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.5.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}], "bugzilla": {"description": "kernel: USB: core: Fix deadlock in usb_deauthorize_interface()", "id": "2278237", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278237"}, "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": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nUSB: core: Fix deadlock in usb_deauthorize_interface()\nAmong the attribute file callback routines in\ndrivers/usb/core/sysfs.c, the interface_authorized_store() function is\nthe only one which acquires a device lock on an ancestor device: It\ncalls usb_deauthorize_interface(), which locks the interface's parent\nUSB device.\nThe will lead to deadlock if another process already owns that lock\nand tries to remove the interface, whether through a configuration\nchange or because the device has been disconnected. As part of the\nremoval procedure, device_del() waits for all ongoing sysfs attribute\ncallbacks to complete. But usb_deauthorize_interface() can't complete\nuntil the device lock has been released, and the lock won't be\nreleased until the removal has finished.\nThe mechanism provided by sysfs to prevent this kind of deadlock is\nto use the sysfs_break_active_protection() function, which tells sysfs\nnot to wait for the attribute callback.\nReported-and-tested by: Yue Sun <samsun1006219@gmail.com>\nReported by: xingwei lee <xrivendell7@gmail.com>"], "name": "CVE-2024-26934", "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:9", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Under investigation", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26934\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26934\nhttps://lore.kernel.org/linux-cve-announce/2024050123-CVE-2024-26934-e2fc@gregkh/T"], "threat_severity": "Low", "upstream_fix": "kernel 4.19.312, kernel 5.4.274, kernel 5.10.215, kernel 5.15.154, kernel 6.1.84, kernel 6.6.24, kernel 6.7.12, kernel 6.8.3, kernel 6.9-rc2"}