Tracker / CVE-2025-21689
CVE-2025-21689
In the Linux kernel, the following vulnerability has been resolved: USB: serial: quatech2: fix null-ptr-deref in qt2_process_read_urb() This patch addresses a null-ptr-deref in qt2_process_read_urb() due to an incorrect bounds check in the following: if (newport > serial->num_ports) { dev_err(&port->dev, "%s - port change to invalid port: %i\n", __func__, newport); break; } The condition doesn't account for the valid range of the serial->port buffer, which is from 0 to serial->num_ports - 1. When newport is equal to serial->num_ports, the assignment of "port" in the following code is out-of-bounds and NULL: serial_priv->current_port = newport; port = serial->port[serial_priv->current_port]; The fix checks if newport is greater than or equal to serial->num_ports indicating it is out-of-bounds.
Prodotti e versioni affette
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.5 → 5.4.290 |
| linux | linux_kernel · 5.11 → 5.15.178 |
| linux | linux_kernel · 5.16 → 6.1.128 |
| linux | linux_kernel · 5.5 → 5.10.234 |
| linux | linux_kernel · 6.2 → 6.6.75 |
| linux | linux_kernel · 6.7 → 6.12.12 |