Answer in brief
CVE-2025-39801 records a Medium severity (CVSS 5.5) vulnerability in usb: dwc3: Remove WARN_ON for device endpoint command timeouts. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC CN 4100 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC CN 4100 (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 3.2 | Not reported |
| Linux/Linuxgeneric | >=72246da40f3719af3bfd104a2365b32537c27d83 <dfe40159eec6ca63b40133bfa783eee2e3ed829f || >=72246da40f3719af3bfd104a2365b32537c27d83 <5a1a847d841505dba2bd85602daf5c218e1d85b8 || >=72246da40f3719af3bfd104a2365b32537c27d83 <84c95dbf5bece56086cdb65a64162af35158bdd9 || >=72246da40f3719af3bfd104a2365b32537c27d83 <f49697dfba2915a9ff36f94604eb76fa61413929 || >=72246da40f3719af3bfd104a2365b32537c27d83 <db27482b9db340402e05d4e9b75352bbaca51af2 || >=72246da40f3719af3bfd104a2365b32537c27d83 <45eae113dccaf8e502090ecf5b3d9e9b805add6f | dfe40159eec6ca63b40133bfa783eee2e3ed829f, 5a1a847d841505dba2bd85602daf5c218e1d85b8, 84c95dbf5bece56086cdb65a64162af35158bdd9, f49697dfba2915a9ff36f94604eb76fa61413929, db27482b9db340402e05d4e9b75352bbaca51af2, 45eae113dccaf8e502090ecf5b3d9e9b805add6f |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
Published upstream
Sep 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 28, 2026
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.
Quoted source text, attributed separately from HOL analysis.