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Ubuntu alert USN-2140-1 (kernel)

From:  John Johansen <john.johansen@canonical.com>
To:  ubuntu-security-announce@lists.ubuntu.com
Subject:  [USN-2140-1] Linux kernel vulnerabilities
Date:  Fri, 07 Mar 2014 04:13:04 -0800
Message-ID:  <5319B7D0.4070202@canonical.com>

========================================================================== Ubuntu Security Notice USN-2140-1 March 07, 2014 linux vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 13.10 Summary: Several security issues were fixed in the kernel. Software Description: - linux: Linux kernel Details: An information leak was discovered in the Linux kernel when built with the NetFilter Connection Tracking (NF_CONNTRACK) support for IRC protocol (NF_NAT_IRC). A remote attacker could exploit this flaw to obtain potentially sensitive kernel information when communicating over a client- to-client IRC connection(/dcc) via a NAT-ed network. (CVE-2014-1690) Matthew Thode reported a denial of service vulnerability in the Linux kernel when SELinux support is enabled. A local user with the CAP_MAC_ADMIN capability (and the SELinux mac_admin permission if running in enforcing mode) could exploit this flaw to cause a denial of service (kernel crash). (CVE-2014-1874) An information leak was discovered in the Linux kernel's NFS filesystem. A local users with write access to an NFS share could exploit this flaw to obtain potential sensative information from kernel memory. (CVE-2014-2038) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 13.10: linux-image-3.11.0-18-generic 3.11.0-18.32 linux-image-3.11.0-18-generic-lpae 3.11.0-18.32 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-2140-1 CVE-2014-1690, CVE-2014-1874, CVE-2014-2038 Package Information: https://launchpad.net/ubuntu/+source/linux/3.11.0-18.32 -- 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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