How severe is CVE-2010-4242?

CVE-2010-4242 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2010-4242 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-4242?

CVE-2010-4242 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2010-4242?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2010-4242 published?

CVE-2010-4242 was published on 2011-01-11 and last updated on 2026-06-16.

CVE-2010-4242

CVE-2010-4242 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Linux Linux Kernel
Published: 2011-01-11
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2010-4242?: 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.
How severe is CVE-2010-4242?: CVE-2010-4242 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2010-4242 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-4242?: CVE-2010-4242 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2010-4242?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-4242 published?: CVE-2010-4242 was published on 2011-01-11 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:linux:linux_kernel:2.6.36:*:*:*:*:*:*:*

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