--- title: "CVE-2011-2484\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-2011-2484?format=md keywords: index, follow --- # CVE-2011-2484 Publication date 24 June 2011 Last updated 4 July 2026 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description The add\_del\_listener function in kernel/taskstats.c in the Linux kernel 2.6.39.1 and earlier does not prevent multiple registrations of exit handlers, which allows local users to cause a denial of service (memory and CPU consumption), and bypass the OOM Killer, via a crafted application. ### From the Ubuntu Security Team Vasiliy Kulikov discovered that taskstats listeners were not correctly handled. A local attacker could expoit this to exhaust memory and CPU resources, leading to a denial of service. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | linux-goldfish | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-grouper | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-maguro | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-mako | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-manta | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-flo | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux | 14.04 LTS trusty | Not affected | | 13.10 saucy | Not affected | | 12.10 quantal | Not affected | | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not affected | | 11.04 natty | Fixed 2.6.38-11.47 | | 10.10 maverick | Fixed 2.6.35-30.57 | | 10.04 LTS lucid | Fixed 2.6.32-34.77 | | 8.04 LTS hardy | Fixed 2.6.24-29.92 | | linux-ec2 | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Ignored end of life | | 10.04 LTS lucid | Fixed 2.6.32-318.38 | | 8.04 LTS hardy | Not in release | | linux-fsl-imx51 | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Fixed 2.6.31-610.27 | | 8.04 LTS hardy | Not in release | | linux-lts-backport-maverick | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Fixed 2.6.35-30.57~lucid1 | | 8.04 LTS hardy | Not in release | | linux-lts-backport-natty | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Fixed 2.6.38-11.49~lucid1 | | 8.04 LTS hardy | Not in release | | linux-lts-backport-oneiric | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 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 | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Fixed 2.6.32-418.35 | | 10.04 LTS lucid | Fixed 2.6.32-218.35 | | 8.04 LTS hardy | Not in release | | linux-ti-omap4 | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not affected | | 12.10 quantal | Not affected | | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not affected | | 11.04 natty | Fixed 2.6.38-1209.15 | | 10.10 maverick | Fixed 2.6.35-903.23 | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | 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-2011-2484?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 | * Introduced by [f9fd891](https://git.kernel.org/linus/f9fd8914c1acca0d98b69d831b128d5b52f03c51), fixed by [26c4cae](https://git.kernel.org/linus/26c4caea9d697043cc5a458b96411b86d7f6babd) | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2484) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-2484) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-2484) * [Debian](https://security-tracker.debian.org/tracker/CVE-2011-2484) ### Related Ubuntu Security Notices (USN) + [USN-1208-1](https://usn.ubuntu.com/USN-1208-1) + Linux kernel (Marvel DOVE) vulnerabilities + 14 September 2011 + [USN-1205-1](https://usn.ubuntu.com/USN-1205-1) + Linux kernel (Maverick backport) vulnerabilities + 13 September 2011 + [USN-1202-1](https://usn.ubuntu.com/USN-1202-1) + Linux kernel (OMAP4) vulnerabilities + 13 September 2011 + [USN-1186-1](https://usn.ubuntu.com/USN-1186-1) + Linux kernel vulnerabilities + 9 August 2011 + [USN-1203-1](https://usn.ubuntu.com/USN-1203-1) + Linux kernel (Marvel DOVE) vulnerabilities + 13 September 2011 + [USN-1218-1](https://usn.ubuntu.com/USN-1218-1) + Linux kernel vulnerabilities + 29 September 2011 + [USN-1204-1](https://usn.ubuntu.com/USN-1204-1) + Linux kernel (i.MX51) vulnerabilities + 13 September 2011 + [USN-1256-1](https://usn.ubuntu.com/USN-1256-1) + Linux kernel (Natty backport) vulnerabilities + 9 November 2011 + [USN-1201-1](https://usn.ubuntu.com/USN-1201-1) + Linux kernel vulnerabilities + 13 September 2011 + [USN-1212-1](https://usn.ubuntu.com/USN-1212-1) + Linux kernel (OMAP4) vulnerabilities + 21 September 2011 + [USN-1216-1](https://usn.ubuntu.com/USN-1216-1) + Linux kernel (EC2) vulnerabilities + 26 September 2011 + [USN-1193-1](https://usn.ubuntu.com/USN-1193-1) + Linux kernel vulnerabilities + 19 August 2011 ### Other references * *