Package: openssh-server
Version: 1:7.9p1-10+deb10u2
Severity: critical
Justification: breaks the whole system
Updating libc on stable breaks sshd; it dies with a SIGSYS on
clock_nanosleep.
https://www.openssh.com/releasenotes.html says
- Allow clock_nanosleep() in sandbox (recent glibc) bz3093
and indeed updating openssh-server to 1:8.3p1-1 makes it work again.
Please update OpenSSH on stable!!