============================================================================ Ubuntu Security Notice USN-2045-1 December 03, 2013 linux vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 13.04 Summary: Several security issues were fixed in the kernel. Software Description: - linux: Linux kernel Details: A flaw was discovered in the Linux kernel's dm snapshot facility. A remote authenticated user could exploit this flaw to obtain sensitive information or modify/corrupt data. (CVE-2013-4299) Alan Chester reported a flaw in the IPv6 Stream Control Transmission Protocol (SCTP) of the Linux kernel. A remote attacker could exploit this flaw to obtain sensitive information by sniffing network traffic. (CVE-2013-4350) Dmitry Vyukov reported a flaw in the Linux kernel's handling of IPv6 UDP Fragmentation Offload (UFO) processing. A remote attacker could leverage this flaw to cause a denial of service (system crash). (CVE-2013-4387) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 13.04: linux-image-3.8.0-34-generic 3.8.0-34.49 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-2045-1 CVE-2013-4299, CVE-2013-4350, CVE-2013-4387 Package Information: https://launchpad.net/ubuntu/+source/linux/3.8.0-34.49