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Special Forums News, Links, Events and Announcements Flaw leaves Linux computers vulnerable Post 19149 by jacx2 on Saturday 6th of April 2002 12:22:19 PM
Old 04-06-2002
That is a threat at this time however I think that in the next version of Linux (Version 7.3 i think) Linus Torvalds (The creator of Linux) will have some sort of defence against it.
We'll have to wait and see
 
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Linux::KernelSort(3pm)					User Contributed Perl Documentation				    Linux::KernelSort(3pm)

NAME
Linux::KernelSort - Perl extension for sorting and comparing Linux kernel versions. The expected kernel version naming convention is the same naming convetion demonstrated by http://www.kernel.org. NOTE: Currently, only the 2.6.x series of kernels (including -rc's, -git's, and -mm's) are properly evaluated. SYNOPSIS
use Linux::KernelSort; my $kernel = new Linux::KernelSort; my $ret; my $version1 = "2.6.19"; my $version2 = "2.6.19-rc2-git7"; $ret = $kernel->compare($version1, $version2); if ($ret == 0) { print "$version1 and $version2 are the same version "; } elsif ($ret > 0) { print "$version1 is newer than $version2 "; } else { print "$version1 is older than $version2 "; } my @kernel_list = ( '2.6.15', '2.6.18', '2.6.18-rc2', '2.6.18-rc2-git2', '2.6.18-mm1', '2.6.18-rc2-mm1' ); my @sorted_list = $kernel->sort(@kernel_list); print join( ', ', @sorted_list ); DESCRIPTION
Linux::KernelSort is intended to sort a list of kernel versions into ascending order. It also provides the capability to compare two ker- nel versions and determine if one version is newer, older, or the same as the other version. FUNCTIONS
version_check() Purpose: Verify the version is valid and follows the proper naming convention demonstrated by http://www.kernel.org Input: A string containing the kernel version Return: 0 if version is valid 1 if version is invalid rank() Purpose: Generate a ranking for a given kernel version Input: A string containing the kernel version which follows the proper naming convention demonstrated by http://www.kernel.org Return: Kernel ranking compare() Purpose: Compare two kernel versions Input: Strings ($kernel1, $kernel2) each containing a kernel version which follows the proper naming conventaion demonstrated by http://www.kernel.org Return -1 if $kernel1 < $kernel2 (ie $kernel1 is older than $kernel2) 0 if $kernel1 == $kernel2 (ie $kernel1 is the same version as $kernel2) 1 if $kernel1 > $kernel2 (ie $kernel1 is newer than $kernel2) sort() Purpose: Sort a list of kernel versions in ascending order. Uses shell sort algorithm. Input: Array of strings containing kernel versions which follows the proper naming convention demonstrated by http://www.kernel.org Return: Sorted array AUTHOR
Leann Ogasawara <lt>ogasawara@osdl.org<gt> COPYRIGHT AND LICENSE
Linux-KernelSort is Copyright (c) 2006, by Leann Ogasawara. All rights reserved. You may distribute this code under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file. perl v5.8.8 2008-02-23 Linux::KernelSort(3pm)

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