FKIE_CVE-2025-39801

Vulnerability from fkie_nvd - Published: 2025-09-15 13:15 - Updated: 2026-01-23 02:34
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: Remove WARN_ON for device endpoint command timeouts This commit addresses a rarely observed endpoint command timeout which causes kernel panic due to warn when 'panic_on_warn' is enabled and unnecessary call trace prints when 'panic_on_warn' is disabled. It is seen during fast software-controlled connect/disconnect testcases. The following is one such endpoint command timeout that we observed: 1. Connect ======= ->dwc3_thread_interrupt ->dwc3_ep0_interrupt ->configfs_composite_setup ->composite_setup ->usb_ep_queue ->dwc3_gadget_ep0_queue ->__dwc3_gadget_ep0_queue ->__dwc3_ep0_do_control_data ->dwc3_send_gadget_ep_cmd 2. Disconnect ========== ->dwc3_thread_interrupt ->dwc3_gadget_disconnect_interrupt ->dwc3_ep0_reset_state ->dwc3_ep0_end_control_data ->dwc3_send_gadget_ep_cmd In the issue scenario, in Exynos platforms, we observed that control transfers for the previous connect have not yet been completed and end transfer command sent as a part of the disconnect sequence and processing of USB_ENDPOINT_HALT feature request from the host timeout. This maybe an expected scenario since the controller is processing EP commands sent as a part of the previous connect. It maybe better to remove WARN_ON in all places where device endpoint commands are sent to avoid unnecessary kernel panic due to warn.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/45eae113dccaf8e502090ecf5b3d9e9b805add6fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a1a847d841505dba2bd85602daf5c218e1d85b8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/84c95dbf5bece56086cdb65a64162af35158bdd9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/db27482b9db340402e05d4e9b75352bbaca51af2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfe40159eec6ca63b40133bfa783eee2e3ed829fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f49697dfba2915a9ff36f94604eb76fa61413929Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.17
linux linux_kernel 6.17
debian debian_linux 11.0
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      "value": "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 \u0027panic_on_warn\u0027 is enabled\nand unnecessary call trace prints when \u0027panic_on_warn\u0027 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-\u003edwc3_thread_interrupt\n -\u003edwc3_ep0_interrupt\n  -\u003econfigfs_composite_setup\n   -\u003ecomposite_setup\n    -\u003eusb_ep_queue\n     -\u003edwc3_gadget_ep0_queue\n      -\u003e__dwc3_gadget_ep0_queue\n       -\u003e__dwc3_ep0_do_control_data\n        -\u003edwc3_send_gadget_ep_cmd\n\n2. Disconnect\n   ==========\n-\u003edwc3_thread_interrupt\n -\u003edwc3_gadget_disconnect_interrupt\n  -\u003edwc3_ep0_reset_state\n   -\u003edwc3_ep0_end_control_data\n    -\u003edwc3_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."
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  "lastModified": "2026-01-23T02:34:52.400",
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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