============================================================================ Ubuntu Security Notice USN-2560-1 April 08, 2015 linux vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.04 LTS Summary: Several security issues were fixed in the kernel. Software Description: - linux: Linux kernel Details: An integer overflow was discovered in the stack randomization feature of the Linux kernel on 64 bit platforms. A local attacker could exploit this flaw to bypass the Address Space Layout Randomization (ASLR) mitigation mechanism. (CVE-2015-1593) An information leak was discovered in the Linux kernel's handling of userspace configuration of the link layer control (LLC). A local user could exploit this flaw to read data from other sysctl settings. (CVE-2015-2041) An information leak was discovered in how the Linux kernel handles setting the Reliable Datagram Sockets (RDS) settings. A local user could exploit this flaw to read data from other sysctl settings. (CVE-2015-2042) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 LTS: linux-image-3.2.0-80-generic 3.2.0-80.116 linux-image-3.2.0-80-generic-pae 3.2.0-80.116 linux-image-3.2.0-80-highbank 3.2.0-80.116 linux-image-3.2.0-80-omap 3.2.0-80.116 linux-image-3.2.0-80-powerpc-smp 3.2.0-80.116 linux-image-3.2.0-80-powerpc64-smp 3.2.0-80.116 linux-image-3.2.0-80-virtual 3.2.0-80.116 After a standard system update you need to reboot your computer to make all the necessary changes. 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. References: http://www.ubuntu.com/usn/usn-2560-1 CVE-2015-1593, CVE-2015-2041, CVE-2015-2042 Package Information: https://launchpad.net/ubuntu/+source/linux/3.2.0-80.116