CVE-2010-4242: Linux Kernel

Medium severity, CVSS 4.0. EPSS: 0.5% chance of exploitation in the next 30 days.

The hci_uart_tty_open function in the HCI UART driver (drivers/bluetooth/hci_ldisc.c) in the Linux kernel 2.6.36, and possibly other versions, does not verify whether the tty has a write operation, which allows local users to cause a denial of service (NULL pointer dereference) via vectors related to the Bluetooth driver.

Affected products

• Linux Linux Kernel: version 2.6.36 only

Published 2011-01-11. Last modified 2026-06-16.