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Ubuntu alert USN-1452-1 (linux)

From:  John Johansen <john.johansen@canonical.com>
To:  ubuntu-security-announce@lists.ubuntu.com
Subject:  [USN-1452-1] Linux kernel vulnerabilities
Date:  Fri, 25 May 2012 12:19:00 -0700
Message-ID:  <4FBFDB24.4030309@canonical.com>
Archive-link:  Article, Thread

========================================================================== Ubuntu Security Notice USN-1452-1 May 25, 2012 linux vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.10 Summary: Several security issues were fixed in the kernel. Software Description: - linux: Linux kernel Details: A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. (CVE-2012-1601) Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier. (CVE-2012-2123) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.10: linux-image-3.0.0-20-generic 3.0.0-20.34 linux-image-3.0.0-20-generic-pae 3.0.0-20.34 linux-image-3.0.0-20-omap 3.0.0-20.34 linux-image-3.0.0-20-powerpc 3.0.0-20.34 linux-image-3.0.0-20-powerpc-smp 3.0.0-20.34 linux-image-3.0.0-20-powerpc64-smp 3.0.0-20.34 linux-image-3.0.0-20-server 3.0.0-20.34 linux-image-3.0.0-20-virtual 3.0.0-20.34 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-1452-1 CVE-2012-1601, CVE-2012-2123 Package Information: https://launchpad.net/ubuntu/+source/linux/3.0.0-20.34 -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security...


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