--- title: "CVE-2010-4242\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2010-4242?format=md keywords: index, follow --- # CVE-2010-4242 Publication date 10 January 2011 Last updated 24 July 2024 --- Ubuntu priority **Low** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## 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. ### From the Ubuntu Security Team Alan Cox discovered that the HCI UART driver did not correctly check if a write operation was available. If the mmap\_min-addr sysctl was changed from the Ubuntu default to a value of 0, a local attacker could exploit this flaw to gain root privileges. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | linux | 11.04 natty | Not affected | | 10.10 maverick | Fixed 2.6.35-25.43 | | 10.04 LTS lucid | Fixed 2.6.32-27.49 | | 9.10 karmic | Fixed 2.6.31-23.74 | | 8.04 LTS hardy | Fixed 2.6.24-29.87 | | 6.06 LTS dapper | Not in release | | linux-ec2 | 11.04 natty | Not in release | | 10.10 maverick | Ignored end of life | | 10.04 LTS lucid | Fixed 2.6.32-311.22 | | 9.10 karmic | Fixed 2.6.31-308.28 | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | linux-fsl-imx51 | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Fixed 2.6.31-610.27 | | 9.10 karmic | Ignored end of life | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | linux-lts-backport-maverick | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Fixed 2.6.35-25.44~lucid1 | | 9.10 karmic | Not in release | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | linux-lts-backport-natty | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not affected | | 8.04 LTS hardy | Not in release | | linux-mvl-dove | 11.04 natty | Not in release | | 10.10 maverick | Fixed 2.6.32-414.30 | | 10.04 LTS lucid | Fixed 2.6.32-213.29 | | 9.10 karmic | Ignored end of life | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | linux-source-2.6.15 | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not in release | | 9.10 karmic | Not in release | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Fixed 2.6.15-57.94 | | linux-ti-omap4 | 11.04 natty | Not affected | | 10.10 maverick | Fixed 2.6.35-903.23 | | 10.04 LTS lucid | Not in release | | 9.10 karmic | Not in release | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2010-4242?format=md#patch-details) ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | linux | * Upstream: | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4242) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2010-4242) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2010-4242) * [Debian](https://security-tracker.debian.org/tracker/CVE-2010-4242) ### Related Ubuntu Security Notices (USN) + [USN-1092-1](https://usn.ubuntu.com/USN-1092-1) + Linux Kernel vulnerabilities + 25 March 2011 + [USN-1089-1](https://usn.ubuntu.com/USN-1089-1) + Linux kernel vulnerabilities + 18 March 2011 + [USN-1202-1](https://usn.ubuntu.com/USN-1202-1) + Linux kernel (OMAP4) vulnerabilities + 13 September 2011 + [USN-1105-1](https://usn.ubuntu.com/USN-1105-1) + Linux kernel vulnerabilities + 5 April 2011 + [USN-1083-1](https://usn.ubuntu.com/USN-1083-1) + Linux kernel vulnerabilities + 3 March 2011 + [USN-1041-1](https://usn.ubuntu.com/USN-1041-1) + Linux kernel vulnerabilities + 10 January 2011 + [USN-1204-1](https://usn.ubuntu.com/USN-1204-1) + Linux kernel (i.MX51) vulnerabilities + 13 September 2011 + [USN-1093-1](https://usn.ubuntu.com/USN-1093-1) + Linux Kernel vulnerabilities (Marvell Dove) + 25 March 2011 ### Other references *