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Ubuntu alert USN-1470-1 (linux-lts-backport-natty)

From:  John Johansen <john.johansen@canonical.com>
To:  ubuntu-security-announce@lists.ubuntu.com
Subject:  [USN-1470-1] Linux kernel (Natty backport) vulnerabilities
Date:  Tue, 12 Jun 2012 14:16:25 -0700
Message-ID:  <4FD7B1A9.8090302@canonical.com>
Archive-link:  Article, Thread

========================================================================== Ubuntu Security Notice USN-1470-1 June 12, 2012 linux-lts-backport-natty vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 10.04 LTS Summary: Several security issues were fixed in the kernel. Software Description: - linux-lts-backport-natty: Linux kernel backport from Natty Details: Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. (CVE-2011-4131) 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) A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. (CVE-2012-2121) 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) Schacher Raindel discovered a flaw in the Linux kernel's memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. (CVE-2012-2133) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 10.04 LTS: linux-image-2.6.38-15-generic 2.6.38-15.60~lucid1 linux-image-2.6.38-15-generic-pae 2.6.38-15.60~lucid1 linux-image-2.6.38-15-server 2.6.38-15.60~lucid1 linux-image-2.6.38-15-virtual 2.6.38-15.60~lucid1 After a standard system update you need to reboot your computer to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1470-1 CVE-2011-4131, CVE-2012-1601, CVE-2012-2121, CVE-2012-2123, CVE-2012-2133 Package Information: https://launchpad.net/ubuntu/+source/linux-lts-backport-n... -- 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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