The hci_uart_tty_open function in the HCI UART driver (drivers/bluetooth/hci_ldisc.c) in...

Vulnerability Description

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.

References

• http://secunia.com/advisories/42789
• http://git.kernel.org/linus/c19483cc5e56ac5e22dd19cf25ba210ab1537773
• http://www.vupen.com/english/advisories/2011/0024
• http://www.redhat.com/support/errata/RHSA-2011-0004.html
• http://www.securityfocus.com/archive/1/520102/100/0/threaded
• http://secunia.com/advisories/46397
• https://exchange.xforce.ibmcloud.com/vulnerabilities/64617
• http://www.redhat.com/support/errata/RHSA-2011-0007.html
• http://www.securityfocus.com/bid/45014
• http://secunia.com/advisories/42963
• https://bugzilla.redhat.com/show_bug.cgi?id=641410
• http://www.vmware.com/security/advisories/VMSA-2011-0012.html
• http://www.vupen.com/english/advisories/2011/0375
• http://secunia.com/advisories/42890
• http://www.redhat.com/support/errata/RHSA-2011-0162.html
• https://lkml.org/lkml/2010/10/7/255
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
• http://www.vupen.com/english/advisories/2011/0168
• http://xorl.wordpress.com/2010/12/01/cve-2010-4242-linux-kernel-bluetooth-hci-uart-invalid-pointer-access/
• http://secunia.com/advisories/43291