In the Linux kernel, the following vulnerability has been resolved:

usb: cdc-acm: Check control transfer buffer size before access

If the first fragment is shorter than struct usb_cdc_notification, we can't
calculate an expected_size. Log an error and discard the notification
instead of reading lengths from memory outside the received data, which can
lead to memory corruption when the expected_size decreases between
fragments, causing `expected_size - acm->nb_index` to wrap.

This issue has been present since the beginning of git history; however,
it only leads to memory corruption since commit ea2583529cd1
("cdc-acm: reassemble fragmented notifications").

A mitigating factor is that acm_ctrl_irq() can only execute after userspace
has opened /dev/ttyACM*; but if ModemManager is running, ModemManager will
do that automatically depending on the USB device's vendor/product IDs and
its other interfaces.

https://git.kernel.org/stable/c/383d516a0ebc8641372b521c8cb717f0f1834831

https://git.kernel.org/stable/c/6abb510251e75f875797d8983a830e6731fa281c

https://git.kernel.org/stable/c/7828e9363ac4d23b02419bf2a45b9f1d9fb35646

https://git.kernel.org/stable/c/e563b01208f4d1f609bcab13333b6c0e24ce6a01

https://git.kernel.org/stable/c/f64079bef6a8a7823358c3f352ea29a617844636