CVE-2026-98773

The Linux kernel contains a vulnerability in the cdc-acm driver where acm_port_shutdown() unconditionally calls acm_unpoison_urbs(). When the ALWAYS_POLL_CTRL quirk is active, this causes the re-submission of control and read URBs even if the device is being disconnected. Because acm_disconnect()...

EUVD-2026-103858

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...