• [$] The difficulty of safe path traversal

    From LWN.net@86:200/23 to All on Wed Jan 7 06:40:08 2026


    Aleksa Sarai, as the maintainer of the
    runc container runtime, faces a
    constant battle against security problems. Recently, runc has seen

    another
    instance of a security vulnerability that can be traced back to the difficulty of handling file paths on Linux. Sarai spoke at the 2025
    Linux Plumbers Conference
    (slides;
    video)
    about
    some of the problems runc has had with path-traversal vulnerabilities, and to ask people to please use

    libpathrs, the library that he has been developing for
    safe path traversal.

    https://lwn.net/Articles/1050887/
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