========================================================================== Ubuntu Security Notice USN-1531-1 August 10, 2012
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in the kernel.
Software Description: - linux: Linux kernel
An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. (CVE-2012-2136)
A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS) protocol implementation. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2012-2372)
An error was discovered in the Linux kernel's memory subsystem (hugetlb). An unprivileged local user could exploit this flaw to cause a denial of service (crash the system). (CVE-2012-2390)
The problem can be corrected by updating your system to the following package versions:
Ubuntu 11.04: linux-image-2.6.38-15-generic 2.6.38-15.65 linux-image-2.6.38-15-generic-pae 2.6.38-15.65 linux-image-2.6.38-15-omap 2.6.38-15.65 linux-image-2.6.38-15-powerpc 2.6.38-15.65 linux-image-2.6.38-15-powerpc-smp 2.6.38-15.65 linux-image-2.6.38-15-powerpc64-smp 2.6.38-15.65 linux-image-2.6.38-15-server 2.6.38-15.65 linux-image-2.6.38-15-versatile 2.6.38-15.65 linux-image-2.6.38-15-virtual 2.6.38-15.65
After a standard system update you need to reboot your computer to make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-1531-1 CVE-2012-2136, CVE-2012-2372, CVE-2012-2390
Package Information: https://launchpad.net/ubuntu/+source/linux/2.6.38-15.65
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