--- title: 'USN-2774-1: Linux kernel (OMAP4) vulnerabilities | Ubuntu security notices' 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/notices/USN-2774-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-2774-1 --- # USN-2774-1: Linux kernel (OMAP4) vulnerabilities Publication date 19 October 2015 Overview Several security issues were fixed in the kernel. Releases [12.04](https://ubuntu.com/security/notices?release=precise) --- Open side navigation ## Packages * [linux-ti-omap4](https://ubuntu.com/security/cves?package=linux-ti-omap4) - Linux kernel for OMAP4 ## Details It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service (system crash) or possibly execute code with administrative privileges. ([CVE-2015-5156](https://ubuntu.com/security/CVE-2015-5156)) It was discovered that the Reliable Datagram Sockets (RDS) implementation in the Linux kernel did not verify sockets were properly bound before attempting to send a message, which could cause a NULL pointer dereference. An attacker could use this to cause a denial of service (system crash). ([CVE-2015-6937](https://ubuntu.com/security/CVE-2015-6937)) ## Update instructions After a standard system update you need to reboot your computer to make all the necessary changes. [Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security) ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well. The problem can be corrected by updating your system to the following package versions: | Ubuntu Release | Package Version | | --- | --- | | 12.04 precise | [linux-image-3.2.0-1472-omap4](https://launchpad.net/ubuntu/+source/linux-ti-omap4) –  [3.2.0-1472.93](https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1472.93) | | | --- ### Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. [Get Ubuntu Pro](https://ubuntu.com/pro) ## References * [CVE-2015-6937](https://ubuntu.com/security/CVE-2015-6937) * [CVE-2015-5156](https://ubuntu.com/security/CVE-2015-5156) ## Related notices * [USN-2779-1](https://ubuntu.com/security/notices/USN-2779-1) * [USN-2778-1](https://ubuntu.com/security/notices/USN-2778-1) * [USN-2777-1](https://ubuntu.com/security/notices/USN-2777-1) * [USN-2776-1](https://ubuntu.com/security/notices/USN-2776-1) * [USN-2775-1](https://ubuntu.com/security/notices/USN-2775-1) * [USN-2773-1](https://ubuntu.com/security/notices/USN-2773-1) --- Have additional questions? [Talk to a member of the team ›](https://wiki.ubuntu.com/SecurityTeam/FAQ?_ga=2.242131138.1744859116.1742138161-1500419473.1726851136&_gl=1*161muja*_gcl_au*MzUyMTIzNjI1LjE3MzYyNDQ4NTE.#Contact)