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#1 2021-02-09 12:24:06

abaumann
Administrator
From: Zurich
Registered: 2019-11-14
Posts: 333
Website

glibc 2.33 ISA mitigation and disabled libseccomp

glibc 2.33 introduced a CPU ISA level guessing at compile and runtime.
We are at the moment disabling this completely, as it fails in guessing
too high ISA levels and resulting in:

/usr/lib/libc.6: CPU ISA level is lower than required.

Also libseccomp support has been disabled for now, notably in
the OpenSSH sandbox (uses the rlimit one for now) and in
file/libmagic till the libcsecomp rules are adapted. The effects
were:

* unable to login via SSH
* EBADSYS errors when executing file

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