CVE-2010-4242 Null dereference in n/a

What is CVE-2010-4242?

CVE-2010-4242 is a medium-severity vulnerability in Linux kernel, published on 11 Jan 2011. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Which versions are affected by CVE-2010-4242?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2010-4242?

Apply the vendor's patch.

Is CVE-2010-4242 being exploited?

There is no known exploitation of CVE-2010-4242 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-q3qq-4fjq-v74p.