Tracker / CVE-2025-38448
CVE-2025-38448
Medium 4.7
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Fix race condition in TTY wakeup A race condition occurs when gs_start_io() calls either gs_start_rx() or gs_start_tx(), as those functions briefly drop the port_lock for usb_ep_queue(). This allows gs_close() and gserial_disconnect() to clear port.tty and port_usb, respectively. Use the null-safe TTY Port helper function to wake up TTY. Example CPU1: CPU2: gserial_connect() // lock gs_close() // await lock gs_start_rx() // unlock usb_ep_queue() gs_close() // lock, reset port.tty and unlock gs_start_rx() // lock tty_wakeup() // NPE
Affected products and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel |
| linux | linux_kernel · 3.5 → 5.4.296 |
| linux | linux_kernel · 5.11 → 5.15.189 |
| linux | linux_kernel · 5.16 → 6.1.146 |
| linux | linux_kernel · 5.5 → 5.10.240 |
| linux | linux_kernel · 6.13 → 6.15.7 |
| linux | linux_kernel · 6.2 → 6.6.99 |
| linux | linux_kernel · 6.7 → 6.12.39 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.