In the Linux kernel, the following vulnerability has been resolved:
net: usb: kaweth: remove TX queue manipulation in kaweth_set_rx_mode
kaweth_set_rx_mode(), the ndo_set_rx_mode callback, calls
netif_stop_queue() and netif_wake_queue(). These are TX queue flow
control functions unrelated to RX multicast configuration.
The premature netif_wake_queue() can re-enable TX while tx_urb is still
in-flight, leading to a double usb_submit_urb() on the same URB:
kaweth_start_xmit() {
netif_stop_queue();
usb_submit_urb(kaweth->tx_urb);
}
kaweth_set_rx_mode() {
netif_stop_queue();
netif_wake_queue(); // wakes TX queue before URB is done
}
kaweth_start_xmit() {
netif_stop_queue();
usb_submit_urb(kaweth->tx_urb); // URB submitted while active
}
This triggers the WARN in usb_submit_urb():
"URB submitted while active"
This is a similar class of bug fixed in rtl8150 by
- commit 958baf5eaee3 ("net: usb: Remove disruptive netif_wake_queue in rtl8150_set_multicast").
Also kaweth_set_rx_mode() is already functionally broken, the
real set_rx_mode action is performed by kaweth_async_set_rx_mode(),
which in turn is not a no-op only at ndo_open() time.
References
Configurations
Configuration 1 (hide)
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History
11 Nov 2026, 20:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary |
|
19 Oct 2026, 20:18
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-362 |
Information
Published : 2026-05-06 12:16
Updated : 2026-11-11 20:10
NVD link : CVE-2026-43180
Mitre link : CVE-2026-43180
CVE.ORG link : CVE-2026-43180
JSON object : View
Products Affected
linux
- linux_kernel
CWE
NVD-CWE-noinfo
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')