--- title: "CVE-2014-4943\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-2014-4943?format=md keywords: index, follow --- # CVE-2014-4943 Publication date 16 July 2014 Last updated 4 July 2026 --- Ubuntu priority **High** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description The PPPoL2TP feature in net/l2tp/l2tp\_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket. ### From the Ubuntu Security Team Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol (PPP) when used with the Layer Two Tunneling Protocol (L2TP). A local user could exploit this flaw to gain administrative privileges. [Read the notes from the security team](https://ubuntu.com/security/CVE-2014-4943?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | linux-goldfish | 15.10 wily | Not affected | | 15.04 vivid | Not affected | | 14.10 utopic | Not affected | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-grouper | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Ignored end of life | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-maguro | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-mako | 15.10 wily | Not affected | | 15.04 vivid | Not affected | | 14.10 utopic | Not affected | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-manta | 15.10 wily | Not affected | | 15.04 vivid | Not affected | | 14.10 utopic | Not affected | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-flo | 15.10 wily | Not affected | | 15.04 vivid | Not affected | | 14.10 utopic | Not affected | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-lts-utopic | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux-lts-vivid | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Not in release | | linux | 15.10 wily | Not affected | | 15.04 vivid | Not affected | | 14.10 utopic | Not affected | | 14.04 LTS trusty | Fixed 3.13.0-32.57 | | 13.10 saucy | Fixed 3.11.0-26.45 | | 12.04 LTS precise | Fixed 3.2.0-67.101 | | 10.04 LTS lucid | Fixed 2.6.32-64.128 | | linux-armadaxp | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Fixed 3.2.0-1636.53 | | 10.04 LTS lucid | Not in release | | linux-ec2 | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Fixed 2.6.32-368.84 | | linux-fsl-imx51 | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Ignored end of life | | linux-linaro-omap | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Ignored end of life | | 10.04 LTS lucid | Not in release | | linux-linaro-shared | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Ignored end of life | | 10.04 LTS lucid | Not in release | | linux-linaro-vexpress | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Ignored end of life | | 10.04 LTS lucid | Not in release | | linux-lts-quantal | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Fixed 3.5.0-54.81~precise1 | | 10.04 LTS lucid | Not in release | | linux-lts-raring | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Fixed 3.8.0-44.66~precise1 | | 10.04 LTS lucid | Not in release | | linux-lts-saucy | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Fixed 3.11.0-26.45~precise1 | | 10.04 LTS lucid | Not in release | | linux-lts-trusty | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Fixed 3.13.0-32.57~precise1 | | 10.04 LTS lucid | Not in release | | linux-mvl-dove | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Ignored end of life | | linux-qcm-msm | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.04 LTS precise | Ignored end of life | | 10.04 LTS lucid | Ignored end of life | | linux-raspi2 | 15.10 wily | Not affected | | 15.04 vivid | Not in release | | 14.04 LTS trusty | Not in release | | 12.04 LTS precise | Not in release | | linux-ti-omap4 | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored end of life | | 12.04 LTS precise | Fixed 3.2.0-1451.71 | | 10.04 LTS lucid | 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-2014-4943?format=md#patch-details) ## Notes --- ### [jdstrand](https://launchpad.net/~jdstrand) android kernels (goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 13.10 preview kernels android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.04 preview kernels ### 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 [3557baa](https://git.kernel.org/linus/3557baabf28088f49bdf72a048fd33ab62e205b1), fixed by [3cf521f](https://git.kernel.org/linus/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf) | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4943) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2014-4943) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2014-4943) * [Debian](https://security-tracker.debian.org/tracker/CVE-2014-4943) ### Related Ubuntu Security Notices (USN) + [USN-2285-1](https://usn.ubuntu.com/USN-2285-1) + Linux kernel (Quantal HWE) vulnerabilities + 17 July 2014 + [USN-2287-1](https://usn.ubuntu.com/USN-2287-1) + Linux kernel (Saucy HWE) vulnerabilities + 17 July 2014 + [USN-2283-1](https://usn.ubuntu.com/USN-2283-1) + Linux kernel vulnerabilities + 16 July 2014 + [USN-2286-1](https://usn.ubuntu.com/USN-2286-1) + Linux kernel (Raring HWE) vulnerabilities + 17 July 2014 + [USN-2289-1](https://usn.ubuntu.com/USN-2289-1) + Linux kernel vulnerabilities + 17 July 2014 + [USN-2288-1](https://usn.ubuntu.com/USN-2288-1) + Linux kernel (Trusty HWE) vulnerabilities + 17 July 2014 + [USN-2290-1](https://usn.ubuntu.com/USN-2290-1) + Linux kernel vulnerabilities + 17 July 2014 + [USN-2281-1](https://usn.ubuntu.com/USN-2281-1) + Linux kernel (EC2) vulnerabilities + 16 July 2014 + [USN-2284-1](https://usn.ubuntu.com/USN-2284-1) + Linux kernel (OMAP4) vulnerabilities + 16 July 2014 + [USN-2282-1](https://usn.ubuntu.com/USN-2282-1) + Linux kernel vulnerabilities + 16 July 2014 ### Other references *