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Exec Shield for the Linux Kernel

DarkOx writes "There is a new patch from Ingo Molnar which can prevent overflow attacks. The scoop from KernelTrap is as follows: Ingo Molnar has announced a new kernel-based security feature for Linux/x86 called 'Exec Shield'. He describes the patch, which is against the 2.4.20-rc1 kernel, as: 'The exec-shield feature provides protection against stack, buffer or function pointer overflows, and against other types of exploits that rely on overwriting data structures and/or putting code into those structures. The patch also makes it harder to pass in and execute the so-called 'shell-code' of exploits. The patch works transparently, ie. no application recompilation is necessary.'"

17 of 264 comments (clear)

  1. Re:Linux is for fags by Anonymous Coward · · Score: -1, Offtopic

    No, it's the second post, fucking retard.

  2. #1 by Anonymous Coward · · Score: -1, Offtopic

    #1

  3. th1rd p057 by Anonymous Coward · · Score: -1, Offtopic

    third post!

  4. .. na by Anonymous Coward · · Score: -1, Offtopic

    whoa, i got the #1239 post...

  5. Re:bush is for fags by Anonymous Coward · · Score: -1, Offtopic

    so ha

  6. *BSD is dying by Anonymous Coward · · Score: -1, Offtopic

    It is official; Netcraft confirms: *BSD is dying

    One more crippling bombshell hit the already beleaguered *BSD community when IDC confirmed that *BSD market share has dropped yet again, now down to less than a fraction of 1 percent of all servers. Coming on the heels of a recent Netcraft survey which plainly states that *BSD has lost more market share, this news serves to reinforce what we've known all along. *BSD is collapsing in complete disarray, as fittingly exemplified by failing dead last in the recent Sys Admin comprehensive networking test.

    You don't need to be a Kreskin to predict *BSD's future. The hand writing is on the wall: *BSD faces a bleak future. In fact there won't be any future at all for *BSD because *BSD is dying. Things are looking very bad for *BSD. As many of us are already aware, *BSD continues to lose market share. Red ink flows like a river of blood.

    FreeBSD is the most endangered of them all, having lost 93% of its core developers. The sudden and unpleasant departures of long time FreeBSD developers Jordan Hubbard and Mike Smith only serve to underscore the point more clearly. There can no longer be any doubt: FreeBSD is dying.

    Let's keep to the facts and look at the numbers.

    OpenBSD leader Theo states that there are 7000 users of OpenBSD. How many users of NetBSD are there? Let's see. The number of OpenBSD versus NetBSD posts on Usenet is roughly in ratio of 5 to 1. Therefore there are about 7000/5 = 1400 NetBSD users. BSD/OS posts on Usenet are about half of the volume of NetBSD posts. Therefore there are about 700 users of BSD/OS. A recent article put FreeBSD at about 80 percent of the *BSD market. Therefore there are (7000+1400+700)*4 = 36400 FreeBSD users. This is consistent with the number of FreeBSD Usenet posts.

    Due to the troubles of Walnut Creek, abysmal sales and so on, FreeBSD went out of business and was taken over by BSDI who sell another troubled OS. Now BSDI is also dead, its corpse turned over to yet another charnel house.

    All major surveys show that *BSD has steadily declined in market share. *BSD is very sick and its long term survival prospects are very dim. If *BSD is to survive at all it will be among OS dilettante dabblers. *BSD continues to decay. Nothing short of a miracle could save it at this point in time. For all practical purposes, *BSD is dead.

    Fact: *BSD is dying

    1. Re:*BSD is dying by Anonymous Coward · · Score: -1, Offtopic

      *FUD*

      Unlike commercial software if a company that backs or even "owns" a project dies it does not kill the development of that project.

      BSD is the original Berkley UNIX and some would argue is real UNIX while Linux is a clone.

      BSD has a faster boot time.

      MacOS X (10) is build on Darwin with is based on BSD. Therefore there are alot more BSD users and desktops that you have taken account for.

      People usually also post to Usenet when they have a problem. Less posts to useful may just mean they have less problems with their OS.

      regards,

      Chris Caston

  7. Re:Linux is for fags by Anonymous Coward · · Score: -1, Offtopic

    By Bush you of course mean the one your mom tells you to lick every night. You know the one under her skirt. Yeah I know she told you it was medication...

  8. fuck you by Anonymous Coward · · Score: -1, Offtopic

    Your mother sucks wetback cock for 19 cents a pop.

  9. Re:WOW! by benna · · Score: -1, Offtopic

    What to scared to say that under your name? You too worried about ending up on my foes list? Yeah I know its tough...

    --
    "It is not how things are in the world that is mystical, but that it exists." -Ludwig Wittgenstein
  10. about fucking time! by Anonymous Coward · · Score: -1, Offtopic

    ingo is such a douchebag. Compare the code to OpenBSD. Looks pretty fucking similar, if you ask me.

  11. What if... by Anonymous Coward · · Score: -1, Offtopic
    Posted IN THE FUTURE May 28, 2003

    It is official; Linus confirms: The */Linux Kernel is dying

    One more crippling bombshell hit the already beleaguered */Linux community when Linus confirmed that */Linux market share has dropped yet again, now down to less than a fraction of 1 percent of all servers. Coming on the heels of a recent Netcraft survey which plainly states that */Linux has lost more market share, this news serves to reinforce what we've known all along. */Linux is collapsing in complete disarray, as fittingly exemplified by failing dead last [samag.com] in the recent Sys Admin comprehensive networking test.

    You don't need to be a Kreskin [amazingkreskin.com] to predict its future. The hand writing is on the wall: it faces a bleak future. In fact there won't be any future at all for Linux because Linux is dying. Things are looking very bad for Linux. As many of us are already aware, Linux continues to lose market share. Red ink flows like a river of blood.

  12. Satuday Night /. Session by Anonymous Coward · · Score: -1, Offtopic

    <self deprecating humor>
    Another saturday night spent on /. When I look back, this is what I'll remember.
    </self deprecating humor>

  13. Re:This is good. by Anonymous Coward · · Score: -1, Offtopic

    Kernel is spelled with an "e", you motherfucking twit!

  14. Re:WOW! Linux blows my goat, thanks. by JW+Troll · · Score: -1, Offtopic

    how about a few reasons not to switch:
    poor (read: nonexistent) power management. Good bye, laptop battery! Nobody at my local LUG had an answer for this one, nor does anybody in the Open Sores community. Linux power management is a myth.

    Xfree86. "You will envy the dead." Succinctly spoken. Ever wonder why your desktop always crashes? It could be Konq/GAIM/MPlayer/whatever, but it's just as likely Xfree. Since amateur software doesn't have a focal point of accountability, does it really make any difference to speculate? Probably not. Just blame X.

    "Desktop Environments" like KDE/GNOME, or the ironically named Enlightenment, provide maximum bloat to fill up every available crevice in your RAM.

    Games. Unless you like compiling software - and I, personally, would rather be playing my games - then Linux isn't for you. Want native Linux games? the last one to make 'em went belly up, and nobody else wants a piece of this one-percenter market where only the hardest-core freeloaders hang out. Then there's WineX.. good grief. What are these people thinking??

    RPM. What a joke. The five people out there who use Debian or have APT can ignore this one, but if you've made it past the installer then you already know far worse about Linux than this list can convey... text mode installation, after all, was a relic of the nineties. Have we not advanced since then?

    Lack of multimedia creation apps. Where's a good audio sequencer? ACID Pro clone? Where's the Vegas Video clone? SoundForge anything? Photoshop? The GiMP doesn't cut it, as anybody who cares to investigate will find in a hurry. The desktop dream is a dream, guys.. get with it. Stop pretending that your hobby OS has practical applications for society at large!

    Bloatware. Has anybody else noticed that EVERY Linux download is larger than the equivalent Win32 download? Take a look at OpenOffice, AbiWord, etc. Why is this? WHo cares. Linux encourages apps to bloat, and that's just how it is.

    Nasty driver installation problems. Ever tried to install a module, then found out that you had to recompile all its dependencies to make it work? Nobody but a developer should ever have to compile software for themselves. Everybody else has better things to do than waste time on compilation.

    I think that takes care of most of it... there's obviously more, but the numbers don't lie: Linux owns 1% of the systems extant because its failings are multifarious and variegated beyond belief.. take a look at the atrociously-designed device namespace for a further clue. Anyways. Thanks for reading this list, you've really made my day! --p00p

    --
    just like the humble blood clot... turboporsche@telus.net
  15. 3 words by ufpdom · · Score: 0, Offtopic

    They deserve it -100 FLAIMBAIT

    --
    There's no Freedom like UFP-dom
  16. NOT OFF TOPIC by TeknoDragon · · Score: 0, Offtopic

    but well... ingo isn't such a "douchbag"

    the latest OpenBSD release has the same feature... called W^X (W xor X)