[fguerraz]

I just contributed this [1] which does what you want for seccomp. Well, not by default, but profiling is now effective against this attack.

Oh, an this [2] just happened

[1] https://github.com/containers/oci-seccomp-bpf-hook/pull/209 [2] https://github.com/moby/moby/pull/52501

[Jasper_]

Blanket blocking socketcall() caused regressions for all 32-bit applications trying to make sockets. In theory, glibc disables socketcall when running on kernel version >= 4.3. In practice, Debian/Fedora/Ubuntu all set glibc's "expected kernel version" to 3.2, so socketcall() is still used on most 32-bit glibc binaries shipped.

https://salsa.debian.org/glibc-team/glibc/-/blob/sid/debian/...

https://src.fedoraproject.org/rpms/glibc/blob/rawhide/f/glib...

[fguerraz]

That’s… great. But who runs containerised 32 bit applications?