{"cve":"CVE-2024-42319","nvd":{"published":"2024-08-17T09:15:11.767","modified":"2026-06-17T07:49:15.157","status":"Modified","description":"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().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/11fa625b45faf0649118b9deaf2d31c86ac41911","https://git.kernel.org/stable/c/1403991a40b94438a2acc749bf05c117abdb34f9","https://git.kernel.org/stable/c/a8bd68e4329f9a0ad1b878733e0f80be6a971649","https://git.kernel.org/stable/c/d00df6700ad10974a7e20646956f4ff22cdbe0ec","https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:54:16.205165117+00:00"},"epss":{"cve":"CVE-2024-42319","score":0.00209,"percentile":0.11009,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}