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    Royce Williams (tychotithonus@infosec.exchange)'s status on Thursday, 30-Apr-2026 13:23:55 JSTRoyce WilliamsRoyce Williams
    in reply to
    • Rich Felker

    @dalias generally true, except as written it may silently fail:

    https://infosec.exchange/@tychotithonus/116490466168316767

    In conversationabout 2 months ago from infosec.exchangepermalink

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      Royce Williams (@tychotithonus@infosec.exchange)
      from Royce Williams
      The CopyFail folks shouldn't have routed stderr to /dev/null in their workaround guidance. For some platforms, where it's not a module ... that mitigation is a no-op: ``` $ rmmod algif_aead rmmod: ERROR: Module algif_aead is builtin. ``` So if there's no kernel patch available yet, you can't use that workaround. Instead, use AppArmor / seccomp / SELinux to block unprivileged AF_ALG socket creation if you can (but don't just turn these hardening layers up if they''re not already in place - they can be tricky) #CopyFail #CVE_2026_31431
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