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Ubuntu alert USN-1364-1 (linux-ti-omap4)

From:  John Johansen <>
Subject:  [USN-1364-1] Linux kernel (OMAP4) vulnerabilities
Date:  Mon, 13 Feb 2012 11:49:48 -0800
Message-ID:  <>
Archive-link:  Article, Thread

========================================================================== Ubuntu Security Notice USN-1364-1 February 13, 2012 linux-ti-omap4 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-ti-omap4: Linux kernel for OMAP4 Details: A flaw was discovered in the XFS filesystem. If a local user mounts a specially crafted XFS image it could potential execute arbitrary code on the system. (CVE-2012-0038) Andy Whitcroft discovered a that the Overlayfs filesystem was not doing the extended permission checks needed by cgroups and Linux Security Modules (LSMs). A local user could exploit this to by-pass security policy and access files that should not be accessible. (CVE-2012-0055) Jüri Aedla discovered that the kernel incorrectly handled /proc/<pid>/mem permissions. A local attacker could exploit this and gain root privileges. (CVE-2012-0056) A flaw was found in the linux kernels IPv4 IGMP query processing. A remote attacker could exploit this to cause a denial of service. (CVE-2012-0207) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.10: linux-image-3.0.0-1207-omap4 3.0.0-1207.16 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: CVE-2012-0038, CVE-2012-0055, CVE-2012-0056, CVE-2012-0207 Package Information: -- ubuntu-security-announce mailing list Modify settings or unsubscribe at:

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