--- title: "CVE-2010-4248\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-2010-4248?format=md keywords: index, follow --- # CVE-2010-4248 Publication date 30 November 2010 Last updated 24 July 2024 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description Race condition in the \_\_exit\_signal function in kernel/exit.c in the Linux kernel before 2.6.37-rc2 allows local users to cause a denial of service via vectors related to multithreaded exec, the use of a thread group leader in kernel/posix-cpu-timers.c, and the selection of a new thread group leader in the de\_thread function in fs/exec.c. ### From the Ubuntu Security Team It was discovered that multithreaded exec did not handle CPU timers correctly. A local attacker could exploit this to crash the system, leading to a denial of service. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | linux | 11.04 natty | Fixed 2.6.37-5.13 | | 10.10 maverick | Fixed 2.6.35-27.47 | | 10.04 LTS lucid | Fixed 2.6.32-29.57 | | 9.10 karmic | Fixed 2.6.31-22.73 | | 8.04 LTS hardy | Fixed 2.6.24-28.86 | | 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 2.6.32-313.25 | | 9.10 karmic | Fixed 2.6.31-307.27 | | 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 2.6.31-609.26 | | 9.10 karmic | Fixed 2.6.31-112.30 | | 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 2.6.35-28.50~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 2.6.32-214.30 | | 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 | Not affected | | 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-2010-4248?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: * Hardy: * Karmic: * Lucid: | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4248) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2010-4248) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2010-4248) * [Debian](https://security-tracker.debian.org/tracker/CVE-2010-4248) ### Related Ubuntu Security Notices (USN) + [USN-1073-1](https://usn.ubuntu.com/USN-1073-1) + Linux kernel vulnerabilities + 25 February 2011 + [USN-1080-1](https://usn.ubuntu.com/USN-1080-1) + Linux kernel vulnerabilities + 1 March 2011 + [USN-1080-2](https://usn.ubuntu.com/USN-1080-2) + Linux kernel vulnerabilities + 2 March 2011 + [USN-1072-1](https://usn.ubuntu.com/USN-1072-1) + Linux kernel vulnerabilities + 25 February 2011 + [USN-1164-1](https://usn.ubuntu.com/USN-1164-1) + Linux kernel vulnerabilities (i.MX51) + 6 July 2011 + [USN-1202-1](https://usn.ubuntu.com/USN-1202-1) + Linux kernel (OMAP4) vulnerabilities + 13 September 2011 + [USN-1081-1](https://usn.ubuntu.com/USN-1081-1) + Linux kernel vulnerabilities + 2 March 2011 + [USN-1187-1](https://usn.ubuntu.com/USN-1187-1) + Linux kernel (Maverick backport) vulnerabilities + 9 August 2011 + [USN-1093-1](https://usn.ubuntu.com/USN-1093-1) + Linux Kernel vulnerabilities (Marvell Dove) + 25 March 2011 ### Other references * *