CVE-2024-42319

{"id": "CVE-2024-42319", "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": "2024-08-17T09:15:11.767", "references": [{"url": "https://git.kernel.org/stable/c/11fa625b45faf0649118b9deaf2d31c86ac41911", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1403991a40b94438a2acc749bf05c117abdb34f9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a8bd68e4329f9a0ad1b878733e0f80be6a971649", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d00df6700ad10974a7e20646956f4ff22cdbe0ec", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mtk-cmdq: Move devm_mbox_controller_register() after devm_pm_runtime_enable()\n\nWhen mtk-cmdq unbinds, a WARN_ON message with condition\npm_runtime_get_sync() < 0 occurs.\n\nAccording to the call tracei below:\n cmdq_mbox_shutdown\n mbox_free_channel\n mbox_controller_unregister\n __devm_mbox_controller_unregister\n ...\n\nThe root cause can be deduced to be calling pm_runtime_get_sync() after\ncalling pm_runtime_disable() as observed below:\n1. CMDQ driver uses devm_mbox_controller_register() in cmdq_probe()\n to bind the cmdq device to the mbox_controller, so\n devm_mbox_controller_unregister() will automatically unregister\n the device bound to the mailbox controller when the device-managed\n resource is removed. That means devm_mbox_controller_unregister()\n and cmdq_mbox_shoutdown() will be called after cmdq_remove().\n2. CMDQ driver also uses devm_pm_runtime_enable() in cmdq_probe() after\n devm_mbox_controller_register(), so that devm_pm_runtime_disable()\n will be called after cmdq_remove(), but before\n devm_mbox_controller_unregister().\n\nTo fix this problem, cmdq_probe() needs to move\ndevm_mbox_controller_register() after devm_pm_runtime_enable() to make\ndevm_pm_runtime_disable() be called after\ndevm_mbox_controller_unregister()."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: buz\u00f3n: mtk-cmdq: mover devm_mbox_controller_register() despu\u00e9s de devm_pm_runtime_enable() Cuando mtk-cmdq se desvincula, aparece un mensaje WARN_ON con la condici\u00f3n pm_runtime_get_sync() &lt; 0. De acuerdo con el seguimiento de llamadas a continuaci\u00f3n: cmdq_mbox_shutdown mbox_free_channel mbox_controller_unregister __devm_mbox_controller_unregister ... Se puede deducir que la causa ra\u00edz es llamar a pm_runtime_get_sync() despu\u00e9s de llamar a pm_runtime_disable() como se observa a continuaci\u00f3n: 1. El controlador CMDQ usa devm_mbox_controller_register() en cmdq_probe() para vincular el cmdq al mbox_controller, por lo que devm_mbox_controller_unregister() cancelar\u00e1 autom\u00e1ticamente el registro del dispositivo vinculado al controlador del buz\u00f3n cuando se elimine el recurso administrado por el dispositivo. Eso significa que devm_mbox_controller_unregister() y cmdq_mbox_shoutdown() ser\u00e1n llamados despu\u00e9s de cmdq_remove(). 2. El controlador CMDQ tambi\u00e9n usa devm_pm_runtime_enable() en cmdq_probe() despu\u00e9s de devm_mbox_controller_register(), por lo que se llamar\u00e1 a devm_pm_runtime_disable() despu\u00e9s de cmdq_remove(), pero antes de devm_mbox_controller_unregister(). Para solucionar este problema, cmdq_probe() necesita mover devm_mbox_controller_register() despu\u00e9s de devm_pm_runtime_enable() para que se llame a devm_pm_runtime_disable() despu\u00e9s de devm_mbox_controller_unregister()."}], "lastModified": "2025-11-03T21:16:17.950", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CBE41AF3-1464-4E2C-8D58-22503478A72E", "versionEndExcluding": "6.1.120", "versionStartIncluding": "4.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CA16DEE3-ABEC-4449-9F4A-7A3DC4FC36C7", "versionEndExcluding": "6.6.64", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92D388F2-1EAF-4CFA-AC06-5B26D762EA7D", "versionEndExcluding": "6.10.3", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}