Answer in brief
CVE-2026-31725 records a Unknown severity vulnerability in usb: gadget: f_ecm: Fix net_device lifecycle with device_move. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fee562a6450b7806f1fbbe1469a67b5395b5c10a <fdc3aa4c23d3e0ed781ca0e10213c645e445cc03 || >=fee562a6450b7806f1fbbe1469a67b5395b5c10a <5eaeac22240d965d24c3bd0c54ded64efd8f6ca1 || >=fee562a6450b7806f1fbbe1469a67b5395b5c10a <4e34f3f491fd731809b57ddb5329ec763bd39553 || >=fee562a6450b7806f1fbbe1469a67b5395b5c10a <9b1e5589593293c78a2ab8bb118a41e2271a2af8 || >=fee562a6450b7806f1fbbe1469a67b5395b5c10a <b2cc4fae67a51f60d81d6af2678696accb07c656 | fdc3aa4c23d3e0ed781ca0e10213c645e445cc03, 5eaeac22240d965d24c3bd0c54ded64efd8f6ca1, 4e34f3f491fd731809b57ddb5329ec763bd39553, 9b1e5589593293c78a2ab8bb118a41e2271a2af8, b2cc4fae67a51f60d81d6af2678696accb07c656 |
| Linux/Linuxgeneric | 3.11 | Not reported |
Published upstream
May 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 21, 2026
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ecm: Fix net_device lifecycle with device_move The net_device is allocated during function instance creation and registered during the bind phase with the gadget device as its sysfs parent. When the function unbinds, the parent device is destroyed, but the net_device survives, resulting in dangling sysfs symlinks: console:/ # ls -l /sys/class/net/usb0 lrwxrwxrwx ... /sys/class/net/usb0 -> /sys/devices/platform/.../gadget.0/net/usb0 console:/ # ls -l /sys/devices/platform/.../gadget.0/net/usb0 ls: .../gadget.0/net/usb0: No such file or directory Use device_move() to reparent the net_device between the gadget device tree and /sys/devices/virtual across bind and unbind cycles. During the final unbind, calling device_move(NULL) moves the net_device to the virtual device tree before the gadget device is destroyed. On rebinding, device_move() reparents the device back under the new gadget, ensuring proper sysfs topology and power management ordering. To maintain compatibility with legacy composite drivers (e.g., multi.c), the bound flag is used to indicate whether the network device is shared and pre-registered during the legacy driver's bind phase.
Quoted source text, attributed separately from HOL analysis.