Canonical Fixes Linux Kernel Vulnerabilities in Ubuntu 10.04 LTS

Users of Ubuntu 10.04 LTS have been asked to update as soon as possible

A security vulnerability that was discovered in the Linux kernel affecting the Ubuntu 10.04 LTS (Lucid Lynx) operating system, was announced by Canonical.

This is the kernel vulnerability found in the Linux kernel packages: CVE-2013-0268, CVE-2013-0309, and CVE-2013-1773. Several security issues have been fixed in the kernel.

For example, a flaw was reported in the permission checks done by the Linux kernel for

/dev/cpu/*/msr. A local root user with all capabilities dropped could exploit this flaw to execute code with full root capabilities.

The security flaws can be fixed if you upgrade your system(s) to thelinux-image-2.6.32-46 (2.6.32-46.105).

Don't forget to reboot your computer after the upgrade!

ATTENTION: Due to an unavoidable ABI change, the kernel packages have a new version number, which will force you to reinstall and recompile all third-party kernel modules you might have installed. Moreover, if you use the linux-restricted-modules package, you have to update it as well to get modules that work with the new Linux kernel version.

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