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!!