Advisory Published

USN-1533-1: Linux kernel vulnerabilities

First published: Fri Aug 10 2012(Updated: )

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) Ulrich Obergfell discovered an error in the Linux kernel's memory management subsystem on 32 bit PAE systems with more than 4GB of memory installed. A local unprivileged user could exploit this flaw to crash the system. (CVE-2012-2373) 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) A flaw was discovered in the Linux kernel's epoll system call. An unprivileged local user could use this flaw to crash the system. (CVE-2012-3375) Some errors where discovered in the Linux kernel's UDF file system, which is used to mount some CD-ROMs and DVDs. An unprivileged local user could use these flaws to crash the system. (CVE-2012-3400) A flaw was discovered in the madvise feature of the Linux kernel's memory subsystem. An unprivileged local use could exploit the flaw to cause a denial of service (crash the system). (CVE-2012-3511)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-3.0.0-24-powerpc64-smp<3.0.0-24.40
3.0.0-24.40
=11.10
All of
ubuntu/linux-image-3.0.0-24-virtual<3.0.0-24.40
3.0.0-24.40
=11.10
All of
ubuntu/linux-image-3.0.0-24-generic<3.0.0-24.40
3.0.0-24.40
=11.10
All of
ubuntu/linux-image-3.0.0-24-powerpc-smp<3.0.0-24.40
3.0.0-24.40
=11.10
All of
ubuntu/linux-image-3.0.0-24-omap<3.0.0-24.40
3.0.0-24.40
=11.10
All of
ubuntu/linux-image-3.0.0-24-powerpc<3.0.0-24.40
3.0.0-24.40
=11.10
All of
ubuntu/linux-image-3.0.0-24-server<3.0.0-24.40
3.0.0-24.40
=11.10
All of
ubuntu/linux-image-3.0.0-24-generic-pae<3.0.0-24.40
3.0.0-24.40
=11.10

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