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=========================================================== Ubuntu Security Notice USN-319-1 July 18, 2006 linux-source-2.6.15 vulnerability CVE-2006-3626 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: linux-image-2.6.15-26-386 2.6.15-26.45 linux-image-2.6.15-26-686 2.6.15-26.45 linux-image-2.6.15-26-amd64-generic 2.6.15-26.45 linux-image-2.6.15-26-amd64-k8 2.6.15-26.45 linux-image-2.6.15-26-amd64-server 2.6.15-26.45 linux-image-2.6.15-26-amd64-xeon 2.6.15-26.45 linux-image-2.6.15-26-hppa32 2.6.15-26.45 linux-image-2.6.15-26-hppa32-smp 2.6.15-26.45 linux-image-2.6.15-26-hppa64 2.6.15-26.45 linux-image-2.6.15-26-hppa64-smp 2.6.15-26.45 linux-image-2.6.15-26-itanium 2.6.15-26.45 linux-image-2.6.15-26-itanium-smp 2.6.15-26.45 linux-image-2.6.15-26-k7 2.6.15-26.45 linux-image-2.6.15-26-mckinley 2.6.15-26.45 linux-image-2.6.15-26-mckinley-smp 2.6.15-26.45 linux-image-2.6.15-26-powerpc 2.6.15-26.45 linux-image-2.6.15-26-powerpc-smp 2.6.15-26.45 linux-image-2.6.15-26-powerpc64-smp 2.6.15-26.45 linux-image-2.6.15-26-server 2.6.15-26.45 linux-image-2.6.15-26-server-bigiron 2.6.15-26.45 linux-image-2.6.15-26-sparc64 2.6.15-26.45 linux-image-2.6.15-26-sparc64-smp 2.6.15-26.45 After a standard system upgrade you need to reboot your computer to effect the necessary changes. This flaw affects Ubuntu 5.04 and Ubuntu 5.10 as well; these releases will be fixed shortly in a followup advisory. Details follow: A race condition has been discovered in the file permission handling of the /proc file system. A local attacker could exploit this to execute arbitrary code with full root privileges.