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  1. Home
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  3. So CopyFail CVE-2026-31431 is a thing.

So CopyFail CVE-2026-31431 is a thing.

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  • joshbressers@infosec.exchangeJ joshbressers@infosec.exchange

    @gregkh @wdormann @Viss

    This post got into my head. I think you're right, the days of coordination are over

    So I wrote it down
    https://opensourcesecurity.io/2026/05-vulnerability-economics/

    riesentoaster@infosec.exchangeR This user is from outside of this forum
    riesentoaster@infosec.exchangeR This user is from outside of this forum
    riesentoaster@infosec.exchange
    wrote last edited by
    #150

    @joshbressers

    Interesting take, and probably more right than wrong. I particularly like the last paragraph. One thing to keep in mind in this brave new world:

    "My only real suggestion is try not to burn yourself out and be nice to each other. Everyone is going to have it rough, it’s not just you. We probably need a support group or something."

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    • wdormann@infosec.exchangeW wdormann@infosec.exchange

      While this vulnerability seems to be discovered using AI ("Xint Code"), I have to assume that they also let the AI decide how to do the vulnerability coordination as well.

      • major builds are out as of this writing 😂

        No distros have official updates for CVE-2026-31431. Fedora 42 and newer have updates, but no official advisory or acknowledgement of CVE-2026-31431. So with them it's unclear if it's even intentional. Red Hat, Ubuntu, Amazon Linux, and Suse all have advisories as of now, but NO updates.

      • disable the algif_aead module as a mitigation. 😂

        Bespoke distros like RHEL don't use a module, it's compiled into the kernel.

      I can't figure out what the Xint Code angle is with this copyfail stuff. On one hand, yes, it is a true vulnerability that affects a LOT of Linux distros available. And they did submit the bug for fixing to the upstream kernel people.

      BUT the CVE has only existed for a week. And NONE of the distros IN THEIR ADVISORY had updates available at the time that they pulled the trigger for publication of the shiny copy.fail website.

      I struggle to think of how this even happens. In all my years of infosec, you're either on board with doing CVD (e.g. coordinating with the former CERT/CC) or you're not (dropping 0day). But this all fits bizarrely in the middle. The publication gives the guise that they did the right thing, (and please use our AI services). But at the same time, they clearly chose to release the vulnerability details and functional exploit before any distro had the ability to properly do anything about it.

      Either these Xint Code (Theori) people have a hidden agenda or ulterior motive that we aren't aware of yet. Or they're just really bad at coordinated vulnerability disclosure. You pick.

      ariadne@social.treehouse.systemsA This user is from outside of this forum
      ariadne@social.treehouse.systemsA This user is from outside of this forum
      ariadne@social.treehouse.systems
      wrote last edited by
      #151

      @wdormann can confirm. in alpine we had to figure out which stable kernels already had a backport. the disclosure was not well executed.

      1 Reply Last reply
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      • mjdxp@labyrinth.zoneM mjdxp@labyrinth.zone
        @wdormann sorry this is off topic, but this is the first time i've ever seen anyone using the stock xfce layout
        dazo@infosec.exchangeD This user is from outside of this forum
        dazo@infosec.exchangeD This user is from outside of this forum
        dazo@infosec.exchange
        wrote last edited by
        #152

        @mjdxp

        Most likely just a tiny pre-configured base Debian and RHEL images, with the smallest desktop environment available. Used to kick off a disposable VMs to test exploits in a safer and more controlled environment. Once the testing is done, the image for that particular VM is deleted.

        I wouldn't expect a minute more than absolutely needed was spent to configure the desktop.

        At least that's what I prefer to do.

        1 Reply Last reply
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        • ra6bit@infosec.exchangeR ra6bit@infosec.exchange

          @ariadne @joshbressers @gregkh @wdormann @Viss @andrewnez @Di4na If only we had some sort of... "Open Source" Vulnerability Database.. as a clearing house. Some sort of non-profit org could maintain it probably

          someone should get on that

          -waits for attacks from angry squirrels-

          wiert@mastodon.socialW This user is from outside of this forum
          wiert@mastodon.socialW This user is from outside of this forum
          wiert@mastodon.social
          wrote last edited by
          #153

          @ra6bit @ariadne @joshbressers @gregkh @wdormann @Viss @andrewnez @Di4na this indeed.

          We (both as in we the people, and we the capitalistic rat race that is addicted to hypes) do not want to pay for things perceived as free until these things suddenly backfire.

          di4na@hachyderm.ioD 1 Reply Last reply
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          • wiert@mastodon.socialW wiert@mastodon.social

            @ra6bit @ariadne @joshbressers @gregkh @wdormann @Viss @andrewnez @Di4na this indeed.

            We (both as in we the people, and we the capitalistic rat race that is addicted to hypes) do not want to pay for things perceived as free until these things suddenly backfire.

            di4na@hachyderm.ioD This user is from outside of this forum
            di4na@hachyderm.ioD This user is from outside of this forum
            di4na@hachyderm.io
            wrote last edited by
            #154

            @wiert @ra6bit @ariadne @joshbressers @gregkh @wdormann @Viss @andrewnez i would love explanations of Patreons or Twitch subscription then.

            Maaaaaaybe this is a useful lie-for-children and there are other mechanisms at play.

            Maaaaaaaaaaayyyyyyyybe

            1 Reply Last reply
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            • uecker@mastodon.socialU uecker@mastodon.social

              @gregkh @icing @joshbressers @wdormann @Viss "it is not easy to decide who should be on the list, so we can not even have list with Linux distros hat should obviously be on list" argument seems rather unconvincing though.

              gregkh@social.kernel.orgG This user is from outside of this forum
              gregkh@social.kernel.orgG This user is from outside of this forum
              gregkh@social.kernel.org
              wrote last edited by
              #155
              @uecker @icing @joshbressers @wdormann @Viss Why is it unconvincing? Who decides what group is on,or is not on, such a list? Your government? My governments? Their government? No government? Me? You? Someone else? And what is the criteria exactly for how?

              See how it breaks down when it hits the real world?

              As I have said many times, "All early-announce lists are a leak, otherwise why would your government allow it to exist?"
              krzk@social.kernel.orgK uecker@mastodon.socialU 2 Replies Last reply
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              • gregkh@social.kernel.orgG gregkh@social.kernel.org
                @uecker @icing @joshbressers @wdormann @Viss Why is it unconvincing? Who decides what group is on,or is not on, such a list? Your government? My governments? Their government? No government? Me? You? Someone else? And what is the criteria exactly for how?

                See how it breaks down when it hits the real world?

                As I have said many times, "All early-announce lists are a leak, otherwise why would your government allow it to exist?"
                krzk@social.kernel.orgK This user is from outside of this forum
                krzk@social.kernel.orgK This user is from outside of this forum
                krzk@social.kernel.org
                wrote last edited by
                #156
                @gregkh @uecker @Viss @icing @joshbressers @wdormann Heh, that's @uecker style of raising FUD, without actual arguments why it supposed to be unconvincing.
                Here https://social.kernel.org/notice/B5gj02TzcQaDMcTpc8 supposedly individual (hobbyist) contributors have somehow obstacles from contributing just because some big companies are implementing changes matching their needs.

                No facts or arguments why it would be more difficult for the hobbyist just statement "makes it more costly for others to contribute".

                No facts why inability to create such list is unconvincing. It is just "unconvincing".

                It's easy to discuss like that - object to anything, even to actual arguments, but without providing anything backing up one's statement.
                uecker@mastodon.socialU 1 Reply Last reply
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                • gregkh@social.kernel.orgG gregkh@social.kernel.org
                  @uecker @icing @joshbressers @wdormann @Viss Why is it unconvincing? Who decides what group is on,or is not on, such a list? Your government? My governments? Their government? No government? Me? You? Someone else? And what is the criteria exactly for how?

                  See how it breaks down when it hits the real world?

                  As I have said many times, "All early-announce lists are a leak, otherwise why would your government allow it to exist?"
                  uecker@mastodon.socialU This user is from outside of this forum
                  uecker@mastodon.socialU This user is from outside of this forum
                  uecker@mastodon.social
                  wrote last edited by
                  #157

                  @gregkh @icing @joshbressers @wdormann @Viss I would imagine that the Linux foundation could assemble some experts that together agree on some objective criteria and a process and based on this organizations / projects are accepted to the list. Seeing such self-organization working in many other areas, I would expect that this is possible. But maybe there are reasons why I am wrong.

                  gregkh@social.kernel.orgG 1 Reply Last reply
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                  • krzk@social.kernel.orgK krzk@social.kernel.org
                    @gregkh @uecker @Viss @icing @joshbressers @wdormann Heh, that's @uecker style of raising FUD, without actual arguments why it supposed to be unconvincing.
                    Here https://social.kernel.org/notice/B5gj02TzcQaDMcTpc8 supposedly individual (hobbyist) contributors have somehow obstacles from contributing just because some big companies are implementing changes matching their needs.

                    No facts or arguments why it would be more difficult for the hobbyist just statement "makes it more costly for others to contribute".

                    No facts why inability to create such list is unconvincing. It is just "unconvincing".

                    It's easy to discuss like that - object to anything, even to actual arguments, but without providing anything backing up one's statement.
                    uecker@mastodon.socialU This user is from outside of this forum
                    uecker@mastodon.socialU This user is from outside of this forum
                    uecker@mastodon.social
                    wrote last edited by
                    #158

                    @krzk @icing @joshbressers @wdormann @Viss @gregkh I apologize for having expressed an opinion as a long term user and contribute to free software. I could, of course, try to explain a bit better why I have the impression that the free software world is a bit too much under the influence of certain tech companies and not as accessible to new contributors anymore, but your reaction tells me that there is probably not much point in having this discussion. (revised)

                    krzk@social.kernel.orgK 1 Reply Last reply
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                    • uecker@mastodon.socialU uecker@mastodon.social

                      @gregkh @icing @joshbressers @wdormann @Viss I would imagine that the Linux foundation could assemble some experts that together agree on some objective criteria and a process and based on this organizations / projects are accepted to the list. Seeing such self-organization working in many other areas, I would expect that this is possible. But maybe there are reasons why I am wrong.

                      gregkh@social.kernel.orgG This user is from outside of this forum
                      gregkh@social.kernel.orgG This user is from outside of this forum
                      gregkh@social.kernel.org
                      wrote last edited by
                      #159
                      @uecker @icing There are many reasons why this would not work. Again, step through the logic to prove it yourself.
                      icing@chaos.socialI 1 Reply Last reply
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                      • uecker@mastodon.socialU uecker@mastodon.social

                        @krzk @icing @joshbressers @wdormann @Viss @gregkh I apologize for having expressed an opinion as a long term user and contribute to free software. I could, of course, try to explain a bit better why I have the impression that the free software world is a bit too much under the influence of certain tech companies and not as accessible to new contributors anymore, but your reaction tells me that there is probably not much point in having this discussion. (revised)

                        krzk@social.kernel.orgK This user is from outside of this forum
                        krzk@social.kernel.orgK This user is from outside of this forum
                        krzk@social.kernel.org
                        wrote last edited by
                        #160
                        @uecker It's easy to make statements, when you do not want to back them with any sort of argument. Just make a statement and put final stop. Product Foo is insecure. Some car manufactured by Baz is not reliable. This argument is unconvincing. I can express that as well...
                        uecker@mastodon.socialU 1 Reply Last reply
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                        • gregkh@social.kernel.orgG gregkh@social.kernel.org
                          @uecker @icing There are many reasons why this would not work. Again, step through the logic to prove it yourself.
                          icing@chaos.socialI This user is from outside of this forum
                          icing@chaos.socialI This user is from outside of this forum
                          icing@chaos.social
                          wrote last edited by
                          #161

                          @uecker

                          I think I should be the only one on that list. I‘ll then notify the right people who can demonstrate their worthiness.😌

                          Wait! That‘s already anthropic‘s business idea. Damn.

                          @gregkh

                          uecker@mastodon.socialU 1 Reply Last reply
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                          • gregkh@social.kernel.orgG gregkh@social.kernel.org
                            @zmanion @joshbressers @wdormann @Viss Why is linux-distros somehow "special" enough to get these types of announcements and not everyone else? How exactly would you explain that to your favorite government entity?
                            zmanion@infosec.exchangeZ This user is from outside of this forum
                            zmanion@infosec.exchangeZ This user is from outside of this forum
                            zmanion@infosec.exchange
                            wrote last edited by
                            #162

                            @gregkh @joshbressers @wdormann @Viss Because it exists and works better than the alternatives: telling nobody (and waiting to see who notices and when) or telling everybody all at once. If you have regulatory requirements to do or not do something, by all means, follow the regs. I'm not claiming any regs implement sound public CVD policy. Also when there is an external finder, the finder could choose to notify distros or follow other coordination paths, in addition to notifying kernel.org.

                            (I also understand that it's not quite as simple as just dropping a message on the distros list, and I read a Qualys message explaining that they no longer use distros.)

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                            • krzk@social.kernel.orgK krzk@social.kernel.org
                              @uecker It's easy to make statements, when you do not want to back them with any sort of argument. Just make a statement and put final stop. Product Foo is insecure. Some car manufactured by Baz is not reliable. This argument is unconvincing. I can express that as well...
                              uecker@mastodon.socialU This user is from outside of this forum
                              uecker@mastodon.socialU This user is from outside of this forum
                              uecker@mastodon.social
                              wrote last edited by
                              #163

                              @krzk I think this is an unfair accusation. I was pointing out that the argument "it is unclear who to put on the list" by itself is a weak argument. I did not think that this needs further explanation as this seems obvious. Maybe there are good reason why it is difficult to maintain such a list, but the thread I commented on did not include those. In any case, I think it is not help to directly accuse people of "FUD" or misinformation in an evolving discussion.

                              1 Reply Last reply
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                              • icing@chaos.socialI icing@chaos.social

                                @uecker

                                I think I should be the only one on that list. I‘ll then notify the right people who can demonstrate their worthiness.😌

                                Wait! That‘s already anthropic‘s business idea. Damn.

                                @gregkh

                                uecker@mastodon.socialU This user is from outside of this forum
                                uecker@mastodon.socialU This user is from outside of this forum
                                uecker@mastodon.social
                                wrote last edited by
                                #164

                                @icing @gregkh Would you consider Debian, arch, gentoo, Redhat, Ubuntu to be worthy?

                                icing@chaos.socialI gregkh@social.kernel.orgG mormund@mastodon.socialM 3 Replies Last reply
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                                • uecker@mastodon.socialU uecker@mastodon.social

                                  @icing @gregkh Would you consider Debian, arch, gentoo, Redhat, Ubuntu to be worthy?

                                  icing@chaos.socialI This user is from outside of this forum
                                  icing@chaos.socialI This user is from outside of this forum
                                  icing@chaos.social
                                  wrote last edited by
                                  #165

                                  @uecker

                                  You are a troll, Mr Uecker.

                                  @gregkh

                                  uecker@mastodon.socialU 1 Reply Last reply
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                                  • icing@chaos.socialI icing@chaos.social

                                    @uecker

                                    You are a troll, Mr Uecker.

                                    @gregkh

                                    uecker@mastodon.socialU This user is from outside of this forum
                                    uecker@mastodon.socialU This user is from outside of this forum
                                    uecker@mastodon.social
                                    wrote last edited by
                                    #166

                                    @icing @gregkh Sorry about that, but I find the "nothing could be done" and "responsible disclosure" is dead arguments fairly weak and I do not think that pointing this out is trolling. But let's stop here.

                                    1 Reply Last reply
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                                    • uecker@mastodon.socialU uecker@mastodon.social

                                      @icing @gregkh Would you consider Debian, arch, gentoo, Redhat, Ubuntu to be worthy?

                                      gregkh@social.kernel.orgG This user is from outside of this forum
                                      gregkh@social.kernel.orgG This user is from outside of this forum
                                      gregkh@social.kernel.org
                                      wrote last edited by
                                      #167
                                      @uecker @icing As is pointed, out, this is just a troll, but seriously, "worthy" isn't the issue. Again, you can not have one group "in" and one "out" without real reasons why anyone is "out".

                                      And again, my point remains, "All early release lists leak like a sieve, otherwise why does your government allow it to exist."
                                      uecker@mastodon.socialU 1 Reply Last reply
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                                      • uecker@mastodon.socialU uecker@mastodon.social

                                        @icing @gregkh Would you consider Debian, arch, gentoo, Redhat, Ubuntu to be worthy?

                                        mormund@mastodon.socialM This user is from outside of this forum
                                        mormund@mastodon.socialM This user is from outside of this forum
                                        mormund@mastodon.social
                                        wrote last edited by
                                        #168

                                        @uecker In case you are sincere: Is Hannah Montana Linux trustworthy? You also forgot Alpine Linux, Suse and and and and in your list, all of which are "serious" distros. What about Android? They run on billions of devices. But they won't patch anyways. Do they get to be in the club? If you inform all of them you might as well inform everyone.

                                        uecker@mastodon.socialU 1 Reply Last reply
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                                        • gregkh@social.kernel.orgG gregkh@social.kernel.org
                                          @uecker @icing As is pointed, out, this is just a troll, but seriously, "worthy" isn't the issue. Again, you can not have one group "in" and one "out" without real reasons why anyone is "out".

                                          And again, my point remains, "All early release lists leak like a sieve, otherwise why does your government allow it to exist."
                                          uecker@mastodon.socialU This user is from outside of this forum
                                          uecker@mastodon.socialU This user is from outside of this forum
                                          uecker@mastodon.social
                                          wrote last edited by
                                          #169

                                          @gregkh @icing I think the hostility "just a troll" is not necessary.

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