{"cve":"CVE-2025-39801","nvd":{"published":"2025-09-15T13:15:35.580","modified":"2026-10-19T21:10:00.160","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: Remove WARN_ON for device endpoint command timeouts\n\nThis commit addresses a rarely observed endpoint command timeout\nwhich causes kernel panic due to warn when 'panic_on_warn' is enabled\nand unnecessary call trace prints when 'panic_on_warn' is disabled.\nIt is seen during fast software-controlled connect/disconnect testcases.\nThe following is one such endpoint command timeout that we observed:\n\n1. Connect\n   =======\n->dwc3_thread_interrupt\n ->dwc3_ep0_interrupt\n  ->configfs_composite_setup\n   ->composite_setup\n    ->usb_ep_queue\n     ->dwc3_gadget_ep0_queue\n      ->__dwc3_gadget_ep0_queue\n       ->__dwc3_ep0_do_control_data\n        ->dwc3_send_gadget_ep_cmd\n\n2. Disconnect\n   ==========\n->dwc3_thread_interrupt\n ->dwc3_gadget_disconnect_interrupt\n  ->dwc3_ep0_reset_state\n   ->dwc3_ep0_end_control_data\n    ->dwc3_send_gadget_ep_cmd\n\nIn the issue scenario, in Exynos platforms, we observed that control\ntransfers for the previous connect have not yet been completed and end\ntransfer command sent as a part of the disconnect sequence and\nprocessing of USB_ENDPOINT_HALT feature request from the host timeout.\nThis maybe an expected scenario since the controller is processing EP\ncommands sent as a part of the previous connect. It maybe better to\nremove WARN_ON in all places where device endpoint commands are sent to\navoid unnecessary kernel panic due to warn.","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":["CWE-617"],"references":["https://git.kernel.org/stable/c/45eae113dccaf8e502090ecf5b3d9e9b805add6f","https://git.kernel.org/stable/c/5a1a847d841505dba2bd85602daf5c218e1d85b8","https://git.kernel.org/stable/c/84c95dbf5bece56086cdb65a64162af35158bdd9","https://git.kernel.org/stable/c/db27482b9db340402e05d4e9b75352bbaca51af2","https://git.kernel.org/stable/c/dfe40159eec6ca63b40133bfa783eee2e3ed829f"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-39801","score":0.00153,"percentile":0.0439,"date":"2026-10-25"},"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."]}