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volkerwirsing@feddit.org to Technology@lemmy.worldEnglish · 21 hours ago

Copy Fail: 732 Bytes to Root on Every Major Linux Distribution. - Xint

xint.io

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Copy Fail: 732 Bytes to Root on Every Major Linux Distribution. - Xint

xint.io

volkerwirsing@feddit.org to Technology@lemmy.worldEnglish · 21 hours ago
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Xint Code disclosed CVE-2026-31431, an authencesn scratch-write bug chaining AF_ALG + splice() into a 4-byte page cache write. A 732-byte PoC gets root on Ubuntu, Amazon Linux, RHEL, SUSE. | AI for Security, Vulnerability Research
  • fullsquare@awful.systems
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    19 hours ago

    patched month ago

    • WhyJiffie@sh.itjust.works
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      7 hours ago

      where exactly? at least a couple hours ago there were no patches yet for any of debian, redhat, suse

      • fullsquare@awful.systems
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        6 hours ago

        https://github.com/torvalds/linux/commit/a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5 its in that post

        • WhyJiffie@sh.itjust.works
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          6 hours ago

          that commit is misleading. that’s the commit of the researcher to their own branch. it was only merged to mainline mid april.

          https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8

          and even that is only for the upcoming 7.0 release. a couple of hours ago trixie was not fixed here, but since then a fixed kernel package was released: https://security-tracker.debian.org/tracker/CVE-2026-31431
          also check the openwall link there, where they discuss it was not backported to LTS kernels until very recently.

          on suse’s part, there are still no fixes: https://www.suse.com/security/cve/CVE-2026-31431.html

    • miss phant@lemmy.blahaj.zone
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      15 hours ago

      No patch on 6.12 LTS and by extension Debian.

    • subOrange@lemmy.world
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      18 hours ago

      Still, my point remains valid.

      • kescusay@lemmy.world
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        17 hours ago

        Windows has an overwhelming market share in PCs. Exploitable vulnerabilities that let hackers own it are going to be huge news for as long as that remains the case, because it directly impacts the lives and personal data of more people.

        That said, I’m seeing lots of people talk about this particular Linux vulnerability, so I’m not even sure what your gripe is.

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