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/proc/self/setgroups write should be conditional #5

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kmcallister opened this issue Mar 10, 2015 · 2 comments
Open

/proc/self/setgroups write should be conditional #5

kmcallister opened this issue Mar 10, 2015 · 2 comments

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@kmcallister
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On my kernel this file doesn't exist and can't be created.

Linux rustmouth 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt2-1 (2014-12-08) x86_64 GNU/Linux
@mstewartgallus
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Then isn't your kernel insecure and should be upgraded immediately‽

@lucab
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lucab commented Apr 6, 2016

No, if I remember correctly, not having it is fine if the kernel does not support userns.
See https://security-tracker.debian.org/tracker/CVE-2014-8989 for this specific case.

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@lucab @kmcallister @mstewartgallus